I have a database first ASP.NET MVC 5 EF6 project. I\'m using VS2015 CE. When I change my database (SQL Server 2012), I then go to VS to update my edmx file like this:
This is a well-known problem with Entity Framework.
"Update Model from Database" continues to be a hit-and-miss affair. Sometimes it works, often it doesn't.
Personally, I just delete the "updated" table from my .edmx file, then re-add it. Then it seems to be work okay.