I'm trying to merge two users on Programmers.SE:
such that ID: 27800 is merged into ID 27674.
However, when running the merge, an exception is thrown and the merge is not completed:
Merge encountered an exception when merging User.Id = 27800 into master User.Id = 27674 ---> System.Data.SqlClient.SqlException: Cannot insert duplicate key row in object 'dbo.UserHistory' with unique index 'UserHistory_UserId_CreationDay_Filtered_Unique'.
I can provide the full stack trace upon request.