Can't select the database when updating EF model

Question

I have an edmx model

I right click on it and select Update model from database

The wizard show up .It normally show me Choose Your Data Connexion, but not anymore. Now it show me directly Choose Your Database Objects

How can I select a different database ?

PS: When I create a second edmx in the same project and want to update it, the second one works like it should

Answer 1

After some trials, I found it.

You must delete the connection string in your config file (app.config in my case)