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ef6-migration-policy

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Actualizado28 de abril de 2026, 22:24

EF6 to EF Core migration policy for .NET Framework to modern .NET upgrades. Use when: assessing EF6 usage, planning package compatibility, multitargeting projects with Entity Framework 6. EF Core is NOT supported on .NET Framework — EF6 packages must be retained during framework-to-modern-dotnet migration and only migrated to EF Core as a separate post-migration effort.

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twsouthwick

twsouthwick/fx2dotnet

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SKILL.md

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name	ef6-migration-policy
description	EF6 to EF Core migration policy for .NET Framework to modern .NET upgrades. Use when: assessing EF6 usage, planning package compatibility, multitargeting projects with Entity Framework 6. EF Core is NOT supported on .NET Framework — EF6 packages must be retained during framework-to-modern-dotnet migration and only migrated to EF Core as a separate post-migration effort.

EF6 Migration Policy

Policy

Entity Framework 6 (EF6) must NOT be migrated to Entity Framework Core (EF Core) during a .NET Framework to modern .NET migration. EF Core does not support .NET Framework, and replacing EF6 with EF Core during the framework migration introduces unnecessary risk and scope.

Rules

Retain EF6 during migration — Keep EntityFramework / EntityFramework.SqlServer packages throughout SDK conversion, package compatibility, and multitargeting phases
Do not replace EF6 with EF Core — Never swap EntityFramework for Microsoft.EntityFrameworkCore.* as part of the framework migration
EF6 is compatible with modern .NET — The EntityFramework 6.5+ package supports net8.0+ via netstandard2.1. Upgrade to the minimum EF6 version that supports the target framework
EF Core migration is a separate effort — Migrating from EF6 to EF Core is a post-migration activity, performed only after the project fully runs on modern .NET
Assessment should flag, not act — When EF6 usage is detected during assessment, note it as a future post-migration task, not a migration blocker or in-scope work item

When This Applies

Package compatibility analysis: Do not flag EF6 as incompatible. Find the minimum EF6 version supporting the target framework.
Multitarget migration: EF6 APIs are available on modern .NET via EF6 6.5+. Do not introduce #if guards to swap EF6 for EF Core.
Assessment reports: List EF6 usage as a post-migration consideration, not as a migration action item.
SDK-style conversion: EntityFramework PackageReference should be preserved as-is.

What NOT to Do

Do not add Microsoft.EntityFrameworkCore packages during any migration phase
Do not remove or replace EntityFramework references
Do not treat EF6 DbContext/model classes as migration blockers
Do not create EF Core DbContext alternatives during framework migration

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name	ef6-migration-policy
description	EF6 to EF Core migration policy for .NET Framework to modern .NET upgrades. Use when: assessing EF6 usage, planning package compatibility, multitargeting projects with Entity Framework 6. EF Core is NOT supported on .NET Framework — EF6 packages must be retained during framework-to-modern-dotnet migration and only migrated to EF Core as a separate post-migration effort.

EF6 Migration Policy

Policy

Rules

Retain EF6 during migration — Keep EntityFramework / EntityFramework.SqlServer packages throughout SDK conversion, package compatibility, and multitargeting phases
Do not replace EF6 with EF Core — Never swap EntityFramework for Microsoft.EntityFrameworkCore.* as part of the framework migration
EF6 is compatible with modern .NET — The EntityFramework 6.5+ package supports net8.0+ via netstandard2.1. Upgrade to the minimum EF6 version that supports the target framework
EF Core migration is a separate effort — Migrating from EF6 to EF Core is a post-migration activity, performed only after the project fully runs on modern .NET
Assessment should flag, not act — When EF6 usage is detected during assessment, note it as a future post-migration task, not a migration blocker or in-scope work item

When This Applies

Package compatibility analysis: Do not flag EF6 as incompatible. Find the minimum EF6 version supporting the target framework.
Multitarget migration: EF6 APIs are available on modern .NET via EF6 6.5+. Do not introduce #if guards to swap EF6 for EF Core.
Assessment reports: List EF6 usage as a post-migration consideration, not as a migration action item.
SDK-style conversion: EntityFramework PackageReference should be preserved as-is.

What NOT to Do

Do not add Microsoft.EntityFrameworkCore packages during any migration phase
Do not remove or replace EntityFramework references
Do not treat EF6 DbContext/model classes as migration blockers
Do not create EF Core DbContext alternatives during framework migration