Can't find a created model when linking it to another model

Problem

I can't find the created model when I want to link it to another model. The model is not visible in the dialog when choosing a model for the linking. 

Solution

There are several reasons why you may not be able to see the model:

• The model to link has not been saved and therefore is not available on the server yet.
• The model hasn't been saved in the scope you wanted to save the model.
• FireStart is not connected to the server.