Apply when installing, publishing, upgrading, or rolling back a VTEX IO storefront theme app (`vendor.store-theme` or any app that owns `store/blocks.json`, `store/routes.json`, and `store/contentSchemas.json`). Covers how Site Editor and theme content are scoped by the app's MAJOR version, why a major version bump leaves the new major with no merchant content and silently falls back to default theme content, the safe install-in-workspace, migrate- content with the `updateThemeIds` mutation, smoke-test, then promote workflow, the 3-way mine-wins merge that `vtex workspace promote` performs against `vtex.pages-graphql` VBase (with automatic per-minute `userData_backup` snapshots when conflicts are resolved), and the support-led recovery path. Use for any operation that changes which version of a content-holding app is installed in `master`.
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Apply when installing, publishing, upgrading, or rolling back a VTEX IO storefront theme app (`vendor.store-theme` or any app that owns `store/blocks.json`, `store/routes.json`, and `store/contentSchemas.json`). Covers how Site Editor and theme content are scoped by the app's MAJOR version, why a major version bump leaves the new major with no merchant content and silently falls back to default theme content, the safe install-in-workspace, migrate- content with the `updateThemeIds` mutation, smoke-test, then promote workflow, the 3-way mine-wins merge that `vtex workspace promote` performs against `vtex.pages-graphql` VBase (with automatic per-minute `userData_backup` snapshots when conflicts are resolved), and the support-led recovery path. Use for any operation that changes which version of a content-holding app is installed in `master`.
metadata
{"track":"vtex-io","tags":["vtex-io","storefront","store-theme","site-editor","versioning","deployment","rollback","pages-graphql"],"globs":["manifest.json","store/blocks.json","store/routes.json","store/templates/**/*.json","store/contentSchemas.json"],"version":"1.0","purpose":"Decide how to safely version, install, promote, and roll back a VTEX IO storefront theme app without losing visibility of merchant Site Editor content","applies_to":["publishing a new version of a storefront theme app","installing a new theme major version in production","promoting a workspace that changes the active theme version","migrating Site Editor, Pages, and Redirects content from the old major to the new major","planning recovery after a broken theme deploy","reviewing whether a `vtex release` command is safe for a content-holding app"],"excludes":["block registration via `interfaces.json` (see `vtex-io-render-runtime-and-blocks`)","storefront component implementation (see `vtex-io-storefront-react`)","app-level settings storage (see `vtex-io-app-settings`)","Master Data versioning (see `vtex-io-masterdata-strategy`)"],"decision_scope":["when a version change should be `patch`, `minor`, or `major` for a content-holding app","which workspace (`master` vs production-flag dev workspace) should receive a theme install first","how to migrate merchant content from the old major to the new major with `updateThemeIds`","how to plan the rollout window around the 3-way mine-wins merge that promote performs","how to recover when a major bump has already been promoted to `master`"],"vtex_docs_verified":"2026-05-12"}
Storefront Theme Versioning, Install, and Rollback
When this skill applies
Use this skill whenever the version of a content-holding storefront app (a theme such as vendor.store-theme, or any app that ships store/blocks.json, store/routes.json, store/templates/, or store/contentSchemas.json) is about to change in master.
Bumping the version of a theme app with vtex release patch | minor | major
Running vtex publish / vtex deploy on a theme app
Running vtex install vendor.store-theme@X.Y.Z against a production account
Promoting a workspace that has a different theme version installed than master
Planning recovery from a deploy that "lost" all storefront content
Reviewing a developer's deploy script that touches a storefront theme
Do not use this skill for:
block registration via interfaces.json — use vtex-io-render-runtime-and-blocks
shopper-facing component code under react/ — use vtex-io-storefront-react
app-level settings under manifest.json#settingsSchema — use vtex-io-app-settings
Master Data schema versioning — use vtex-io-masterdata-strategy
Decision rules
Treat any app that ships content under store/ (theme apps and many storefront apps) as a content-holding app. Its installed MAJOR version is part of the key the platform uses to store and look up every Site Editor change a merchant has ever saved against blocks declared by that app.
Site Editor content, custom routes, templates, and per-template render caches are stored by vtex.pages-graphql under keys of the form vendor.app@MAJOR.x:template. Examples: acme.store-theme@0.x:store.home, acme.store-theme@0.x:store.product.
A patch (0.0.61 → 0.0.62) and a minor (0.1.0 → 0.2.0) reuse the same key and the new version sees the same merchant content. A major ( → ) changes the key. The new major starts with even if the theme code is otherwise identical.
0.x
5.x
zero merchant content
When vtex.pages-graphql cannot find content for the active major, it falls back to the default vtex.store-theme content. The site visibly degrades to "VTEX default theme" content even though the customer's app is installed and rendering.
Avoid vtex release major on a content-holding app whenever possible. Prefer keeping changes within the current major as patch or minor so merchant content carries forward automatically.
When a major bump is unavoidable because of a structural change to blocks, routes, or templates, migrate the merchant content from the old major to the new major with the updateThemeIds mutation in vtex.pages-graphql@2.x before promoting. The mutation rekeys all Site Editor edits, Pages, and Redirects from vendor.app@{oldMajor}.x to vendor.app@{newMajor}.x in one operation. This is the official developer-accessible recovery surface; do not assume content has to be re-authored manually.
Always install and validate a new theme major in a production-flag dev workspace (vtex use rollout-workspace --production, which both creates and switches to the workspace in one step) before promoting. Linking is not enough: vtex link does not exercise published artifacts and does not produce the same content-key behavior as vtex install + vtex workspace promote.
Run updateThemeIds against vtex.pages-graphql@2.x from the GraphQL Admin IDE (vtex install vtex.admin-graphql-ide@3.x, then vtex browse admin/graphql-ide) inside the production-flag dev workspace, after vtex install of the new major and before vtex workspace promote. Site Editor, Pages, and Redirects in that workspace will then resolve under the new major and be carried with the workspace at promote time.
Treat vtex workspace promote as the atomic cutover. Smoke-test the dev workspace's full page set (home, PDP, PLP, department, search, custom routes, account, checkout entry) after running updateThemeIds. If the dev workspace is broken, master will be broken.
Verify that the version published to the Apps Registry matches the source you expect. A common failure pattern is publishing a stripped-down boilerplate by mistake — the registry version installs cleanly, but it does not contain the custom blocks the existing Site Editor content references. updateThemeIds cannot fix a missing-block problem; it only rekeys existing content.
The same updateThemeIds step is required when downgrading to a previous major (for example 5.x → 4.x). The mutation moves content in either direction across MAJOR boundaries.
vtex workspace promote does not wipe master's vtex.pages-graphql VBase content. The service merges with MineWinsConflictsResolver: a 3-way merge of base (the master state the dev workspace forked from), master (current master), and mine (the dev workspace). Master keys not touched by the dev workspace are preserved; conflicting keys are resolved in favor of the dev workspace ("mine wins"). Plan the rollout so that conflicting writes to master during the rollout window are minimized — for example, by pausing merchant Site Editor edits in master while the dev workspace is being prepared.
Whenever MineWinsConflictsResolver resolves a conflict in production, vtex.pages-graphql automatically writes a per-minute snapshot of base, master, and mine to a sibling userData_backup VBase bucket. This is logged with subject: "conflicts_resolution" in the io_vtex_logs index. The snapshot is the recovery source if a promote merges in something unwanted; it is not a substitute for the smoke-test step (no backup is written when there is no conflict to resolve). Treat the backup as a safety net for VTEX support escalations, not a routine self-service restore.
Hard constraints
Constraint: Major version bumps on content-holding apps require an updateThemeIds migration before promote
A vtex release major (or any version change that crosses the MAJOR.x boundary) on an app that owns Store Framework content MUST NOT be promoted to master without first migrating merchant content from the old major to the new major in a production-flag dev workspace, using the updateThemeIds mutation in vtex.pages-graphql@2.x. The new major starts empty from vtex.pages-graphql's point of view; promoting it to master without running updateThemeIds makes the storefront fall back to default theme content for every page that depended on Site Editor edits.
Why this matters
vtex.pages-graphql keys every merchant-owned route, template, Site Editor edit, and Page/Redirect entry by vendor.app@MAJOR.x:template. A patch and minor bump preserve the key; a major bump invalidates it. After a major bump, every Site Editor change the merchant ever saved is no longer visible to the resolver under the new major, and the storefront falls back to default vtex.store-theme content. The official developer-accessible fix is the updateThemeIds mutation, which rekeys all Site Editor edits, Pages, and Redirects from the old major to the new one in a single operation. Skipping it (or assuming developers must re-author content manually) leaves the storefront degraded for shoppers.
Detection
Before running any vtex install vendor.app@X.Y.Z on a production account, compare X to the major currently installed (vtex ls --production | grep store-theme). If X differs, STOP. Require the updateThemeIds migration to be executed in a production-flag dev workspace, after the new major is installed and before promote.
Also STOP if a developer is about to run vtex release major on an app that ships any of: store/blocks.json, store/routes.json, store/templates/, store/contentSchemas.json. Confirm the structural change cannot be modeled as a patch or minor first; if the major is unavoidable, plan the updateThemeIds step explicitly.
Correct
vtex use theme-rollout --production # creates and switches to a production-flag dev workspace
vtex install acme.store-theme@5.0.0
vtex install vtex.admin-graphql-ide@3.x # required to access the GraphQL IDE
vtex browse admin/graphql-ide
# In the IDE, select the app `vtex.pages-graphql@2.x` from the dropdown and run:## mutation {# updateThemeIds(# from: "acme.store-theme@0.x",# to: "acme.store-theme@5.x"# )# }## Expected response: { "data": { "updateThemeIds": true } }# Validate Site Editor, Pages, and Redirects in this workspace, then:
vtex workspace promote
Wrong
vtex release major
vtex publish
vtex install acme.store-theme@5.0.0
# installed straight to master — no merchant content is visible under @5.x# and the storefront falls back to default vtex.store-theme content
Constraint: Never install a content-holding app version directly to master without a dev-workspace smoke test
Any change that swaps the installed version of a content-holding app on master MUST go through a production-flag dev workspace first (vtex use $name --production), be smoke-tested across the full page set, and then be promoted with vtex workspace promote.
Why this matters
master is the public storefront. Installing a theme directly to master makes the new version live for every shopper instantly. If the install reveals a missing block, an empty content surface under the new major, or a stripped-down published artifact, the only recovery is rollback under load. A production-flag dev workspace renders against the same data as master and surfaces the same failures without exposing shoppers.
Detection
If a developer's command sequence runs vtex install while the active workspace is master, STOP. Require switching to a production-flag dev workspace first.
Correct
vtex use theme-rollout-2026-04 --production # creates and switches to a production-flag dev workspace
vtex install acme.store-theme@5.3.5
# if this install crosses a MAJOR boundary, run updateThemeIds before smoke tests.# fetch home, PDP, PLP, search, custom routes from $workspace--$account.myvtex.com# only after smoke tests pass:
vtex workspace promote
Wrong
vtex use master
vtex install acme.store-theme@5.3.5
# any failure is now public
Constraint: Verify the published artifact matches the source you expect
Before installing a new published version of a content-holding app to master, confirm that the artifact in the Apps Registry actually contains the blocks the active merchant content references. A successful vtex publish does not guarantee the artifact carries the merchant's customizations.
Why this matters
A common failure pattern is publishing from a stripped-down repository or from a base-theme fork that lost the custom blocks the merchant has been editing for months. The install succeeds, but pages-graphql cannot resolve the blocks referenced in the merchant's stored content, and the storefront falls back to default content. The artifact and the content disagree.
Detection
If the published version was built from a repository that does not contain the custom blocks the active theme references, STOP. Republish from the correct source. The updateThemeIds migration only rekeys content; it cannot resolve missing block IDs, so a stripped-down artifact will still fall back to default content even after a successful migration.
Correct
# pull the published artifact and confirm it ships the custom blocks
vtex apps files acme.store-theme@5.3.5 store/ | grep -E 'umMaisUm|customHeader'# matches the block IDs the active theme depends on
Wrong
vtex publish
vtex install acme.store-theme@5.3.5
# published artifact is the boilerplate fork; it is missing every custom block# referenced in the merchant's stored content
Constraint: Treat vtex workspace promote as a 3-way mine-wins merge of pages-graphql VBase, not a wipe
vtex workspace promote MUST be planned as a merge between the dev workspace and master, not as a destructive replacement of master's vtex.pages-graphql VBase content. The service uses MineWinsConflictsResolver from @vtex/api: it diffs base (the master state the dev workspace forked from), master (current master), and mine (the dev workspace), and resolves conflicts in favor of the dev workspace.
Why this matters
Master keys that the dev workspace never touched are preserved on promote. Conflicting keys (something edited in both master and the dev workspace after the fork point) are overwritten by the dev workspace's value. Two practical consequences for a theme rollout:
If merchants continue to edit Site Editor in master while the dev workspace is being prepared, those edits to keys the dev workspace also touches will be lost on promote.
After updateThemeIds runs in the dev workspace, the dev workspace owns the new-major content map; promoting it cleanly transfers the rekeyed Site Editor edits, Pages, and Redirects into master via mine-wins.
In production, every conflict resolution writes a per-minute snapshot of base, master, and mine to the sibling userData_backup VBase bucket inside vtex.pages-graphql, logged with subject: "conflicts_resolution". No backup is written when there is no conflict to resolve, so smoke-testing remains the primary safety net.
Detection
If a rollout plan assumes promote will "replace" master content, STOP and rephrase as a merge plan: which keys does the dev workspace touch, which keys is master likely to touch in the same window, and how will conflicts be reconciled. If merchants are actively editing Site Editor in master during the rollout window, STOP and either pause those edits, narrow the rollout window, or document which keys will be overwritten.
Correct
Coordinate the rollout window with the merchant ops team:
- Pause Site Editor edits on master from the moment `updateThemeIds`
runs in the dev workspace until `vtex workspace promote` completes.
- Smoke-test in the dev workspace, then promote.
- After promote, validate Storefront → Site Editor, Pages, Redirects
on master.
If a conflict-resolution log appears (subject: "conflicts_resolution"),
record the backup paths surfaced by pages-graphql in `io_vtex_logs`.
The snapshot lives in the `userData_backup` bucket of vtex.pages-graphql
and can be fetched via the VBase v2 API for support escalation.
Wrong
"Promote will replace master, so we don't need to coordinate."
- Merchants keep editing Site Editor in master during the rollout.
- Promote merges those edits with mine-wins; every conflicting key is
silently overwritten by the dev workspace value.
- Without a smoke-test or coordination, the lost edits are not noticed
until shoppers report missing content.
Preferred pattern
Recommended deploy flow for any change to a content-holding app installed on master:
1. Decide the SemVer bump deliberately
- patch → bug fix, no block contract change
- minor → new optional block, backward-compatible additions
- major → ANY structural change that breaks an existing block contract
(avoid when possible; requires the updateThemeIds migration)
2. vtex release [patch|minor|major]
vtex publish
3. Switch to a production-flag dev workspace
(vtex use both creates and switches in one step)
vtex use theme-rollout-YYYY-MM-DD --production
4. Install the new version in the dev workspace
vtex install vendor.app@X.Y.Z
5. If the bump crosses a MAJOR boundary (including downgrades such as 5.x → 4.x):
a. vtex install vtex.admin-graphql-ide@3.x (if not already installed)
b. vtex browse admin/graphql-ide
c. In the IDE, select the app `vtex.pages-graphql@2.x` from the dropdown
d. Run:
mutation {
updateThemeIds(
from: "{appVendor}.{appName}@{oldMajor}.x",
to: "{appVendor}.{appName}@{newMajor}.x"
)
}
Keep the literal "x" in both keys; do not replace it with a minor or
patch number or the mutation silently fails.
e. Expected response: { "data": { "updateThemeIds": true } }
If the bump is patch or minor inside the same major, skip this step —
content keys are preserved automatically.
6. Smoke-test in the dev workspace against the full page set
- $workspace--$account.myvtex.com/ (home)
- $workspace--$account.myvtex.com/<pdp-slug>/p (product)
- $workspace--$account.myvtex.com/<category> (PLP)
- $workspace--$account.myvtex.com/<dept> (department)
- $workspace--$account.myvtex.com/<search>?_q (search)
- any /institucional/* or other custom routes
- VTEX Admin → Storefront → Site Editor, Pages, Redirects
- account, login, cart, checkout entry
7. If anything is wrong: stop. Do not promote. Investigate.
If everything renders correctly:
- Coordinate the promote window with the merchant ops team so that
no Site Editor edits land on master between `updateThemeIds` in
the dev workspace and `vtex workspace promote`. Promote performs
a 3-way mine-wins merge against pages-graphql VBase, so any
conflicting master edit will be overwritten by the dev workspace.
- vtex workspace promote
8. Re-test on $account.myvtex.com (master) and the public domain.
- Validate Storefront → Site Editor, Pages, Redirects on master.
- If the public CDN serves stale content, validate with cache-busting
query strings; the edge will refresh on its normal TTL.
- If `io_vtex_logs` shows a `subject: "conflicts_resolution"` entry
for `vtex.pages-graphql` in this account around the promote time,
record the listed backup paths. They live in the `userData_backup`
bucket of pages-graphql and can be fetched via the VBase v2 API
if a recovery is needed later.
9. Keep the dev workspace for at least one business day in case a fast
re-promote is needed.
Recommended emergency rollback after a broken major install on master:
1. vtex use rollback-YYYY-MM-DD --production
(vtex use both creates and switches; there is no `vtex workspace create`)
2. vtex install vendor.store-theme@<previous major version>
3. If the rollback crosses a MAJOR boundary (it almost always does), run
updateThemeIds in vtex.pages-graphql@2.x to migrate stored Site Editor
edits, Pages, and Redirects from the broken major back to the previous
major:
mutation {
updateThemeIds(
from: "{appVendor}.{appName}@{brokenMajor}.x",
to: "{appVendor}.{appName}@{previousMajor}.x"
)
}
4. Smoke-test the rollback workspace end-to-end (storefront pages and
VTEX Admin → Storefront → Site Editor, Pages, Redirects).
5. vtex workspace promote
If `updateThemeIds` returns false, the GraphQL IDE shows an error, or
content does not appear after migration, escalate to VTEX support
before promoting; do not promote a workspace whose Site Editor content
has not been validated.
If a previous promote merged in something unwanted, before re-promoting
check `io_vtex_logs` for a `subject: "conflicts_resolution"` entry on
`vtex.pages-graphql` for this account around the original promote
time. The entry lists per-minute snapshot paths inside the
`userData_backup` bucket (`store/templates.{base|master|mine}.<TS>.json`,
`store/content.{...}.json`, `store/routes.{...}.json`) which can be
fetched through the VBase v2 API:
GET https://infra.io.vtex.com/vbase/v2/{account}/{workspace}/
buckets/vtex.pages-graphql/userData_backup/files/{path}
This recovery path requires an admin auth token and is documented in
`vtex/pages-graphql` `TROUBLESHOOTING.md`. Treat it as a support-led
escalation, not a routine self-service step, and always test the
restored payload in a non-master workspace first.
Recommended way to think about content-key behavior:
Patch / minor bump
acme.store-theme @ 0.0.61 → 0.0.62
storage key prefix unchanged: acme.store-theme@0.x:*
merchant content carries over automatically
Major bump
acme.store-theme @ 0.0.61 → 5.0.0
storage key prefix changes: acme.store-theme@0.x:* → acme.store-theme@5.x:*
the new major starts empty from the resolver's point of view
run updateThemeIds in vtex.pages-graphql@2.x inside the production-flag
dev workspace to rekey Site Editor edits, Pages, and Redirects from
acme.store-theme@0.x to acme.store-theme@5.x, then promote
Common failure modes
Running vtex release major on a theme to "clean up" the version number, not realizing it requires the updateThemeIds migration before promote.
Installing a new theme major directly on master because the dev workspace "looked the same".
Publishing from a forked repository that does not contain the custom blocks the active theme depends on. updateThemeIds rekeys content but cannot resolve missing block IDs.
Treating vtex link as equivalent to vtex install for content-holding apps. link does not exercise the published artifact resolution path or the major-keyed content lookup.
Running vtex workspace promote from a workspace that was never smoke-tested end-to-end.
Promoting a major bump without running updateThemeIds first, so the storefront goes live with default vtex.store-theme content for every page that previously depended on Site Editor edits.
Reaching for a non-existent vtex workspace create command. The CLI creates a workspace as a side effect of vtex use {workspaceName} --production; that single command both creates and switches.
Replacing the literal x in updateThemeIds arguments with a minor or patch number (acme.store-theme@5.0.0 instead of acme.store-theme@5.x). The mutation requires the major-with-x form and silently no-ops otherwise.
Running updateThemeIds against the wrong app in the GraphQL IDE dropdown. The mutation only exists in vtex.pages-graphql@2.x.
Trusting the public domain to confirm a fix immediately after promotion. CloudFront serves stale content; use ?utm_source=<value> or another cache-busting parameter to bypass the edge during validation.
Forgetting that downgrades (for example 5.x → 4.x) also cross a MAJOR boundary and need their own updateThemeIds run before promote.
Assuming vtex workspace promote wipes master vtex.pages-graphql VBase content and re-fills it from the dev workspace. It does not — it 3-way merges with mine-wins, so master keys not touched by the dev workspace survive, and master keys that are also touched by the dev workspace get overwritten silently. Coordinate the rollout window with merchant ops to avoid losing concurrent Site Editor edits in master.
Treating the userData_backup bucket inside vtex.pages-graphql as a routine restore endpoint. It is only written when conflicts are resolved (no conflict, no backup), it requires admin-level auth and the VBase v2 API, and it is a support-led TROUBLESHOOTING surface — not a substitute for smoke-testing or for the updateThemeIds flow.
Review checklist
Is the proposed version bump correctly classified as patch, minor, or major against SemVer rules?
If the bump crosses a major boundary, is there a documented updateThemeIds migration step in the production-flag dev workspace (in either direction, including downgrades)?
Is the install going to a production-flag dev workspace first (vtex use $name --production), never directly to master?
If the bump is major, has updateThemeIds been run against vtex.pages-graphql@2.x from the GraphQL Admin IDE, and has the response been { "updateThemeIds": true }?
Has the published artifact been verified to contain the custom blocks the active theme depends on?
Has the dev workspace been smoke-tested across home, PDP, PLP, department, search, custom routes, account, checkout entry, and the Storefront module (Site Editor, Pages, Redirects)?
Has the rollout window been coordinated so that no concurrent Site Editor edits land on master between the dev workspace's updateThemeIds and vtex workspace promote, given the 3-way mine-wins merge?
After promote, has io_vtex_logs been checked for a subject: "conflicts_resolution" entry on vtex.pages-graphql for this account, and (if present) have the listed userData_backup paths been recorded for support escalation?
Is the dev workspace retained for at least one business day after promotion in case a fast re-promote is needed?
Related skills
vtex-io-app-contract — When the question is what the manifest contract should declare, and why a major version bump is a contract-breaking change for content-holding apps.
vtex-io-storefront-theme-app — When the question is what a theme app actually owns (store/blocks.json, store/routes.json, page templates) and how those files relate to merchant Site Editor content.
vtex-io-render-runtime-and-blocks — When the question is how a block name in a theme resolves to a React component, and why missing blocks under the active major cause render failures.
vtex-io-data-access-patterns — When the question is whether a piece of data should live behind Site Editor at all, or in app settings, Master Data, or another store.
Reference
Manifest — How vendor, name, and version form the app identity used in storefront content keys.
Versioning an App — vtex release and the SemVer rules that decide whether a bump preserves or invalidates downstream content keys.
Publishing an App — How vtex publish produces the artifact installed by vtex install.
Installing an App — Workspace scope of vtex install and why dev workspaces must be production-flag for realistic testing.
Creating a Production Workspace — vtex use {workspaceName} --production is the single command that both creates and switches to a production-flag workspace.
Promoting a Workspace to Master — vtex workspace promote as the atomic cutover from a production-flag dev workspace to master.
Migrating CMS settings after a major theme update — Official procedure for the updateThemeIds mutation in vtex.pages-graphql@2.x, including the GraphQL IDE setup and the literal MAJOR.x argument format.
vtex/pages-graphqlTROUBLESHOOTING.md — How MineWinsConflictsResolver writes per-minute base, master, and mine snapshots into the userData_backup bucket of vtex.pages-graphql and how to fetch them via the VBase v2 API for support-led recovery (internal VTEX repo).
Store Framework — Why theme apps own store/ content and how Store Framework consumes it at render time.
