Swift Software Group

Unable to generate an explicit migration because the following explicit migrations are pending

After renaming the namespace of some POCO classes from Primo.LicenseManager.Models to Primo.Licensing.DataModel, the Entity Framework scaffolding no longer recognizes the applied migrations:

Add-Migration -Name AddInvoiceEntity -Verbose -StartUpProjectName LicensingDataModel -ProjectName LicensingDataModel

Unable to generate an explicit migration because the following explicit migrations are pending: [201310191546582_CreateTables]. 
Apply the pending explicit migrations before attempting to generate a new explicit migration.

In SQL Server Management Studio:

select * 
from __MigrationHistory 
where MigrationId = '201310191546582_CreateTables'

MigrationId: 201310191546582_CreateTables
ContextKey: Primo.LicenseManager.Models.Migrations.Configuration
Model: 0x1F8B08000000....
ProductVersion:	5.0.0.net45

The problem

In the database, the ContextKey in the __MigrationHistory table is still the old namespace: Primo.LicenseManager.Models.Migrations.Configuration.

The solution

Update the ContextKey to the new namespace Primo.Licensing.DataModel.Migrations.Configuration

update __MigrationHistory 
set ContextKey = 'Primo.Licensing.DataModel.Migrations.Configuration'
where MigrationId = '201310191546582_CreateTables'

Now this works:

Add-Migration -Name AddInvoiceEntity -Verbose -StartUpProjectName LicensingDataModel -ProjectName LicensingDataModel