Jun 23, 2015 08:06 PM|mostafasydney|LINK
You are using Database-First approach, and trying to migrate using code-first it won't work.
You need to go either approach, in database-first in your EDMX if you add something and try to save it, it will be saved but if you update the model from the database it will go away.
To keep up with DB-first you need to add the table to the database first and then try to save.
Could you provide the Database scripts for Authorize table