Missing diagrams

[lunmaw]

Hello,

we have a strange behavior (I think).

We have a project stored in SQL server, we are using TFS to version control our different packages.

Now to our problem. We have a package with use cases and use case diagrams. Suddenly the diagrams dissappeared. When I open up the package in the Project Browser I no longer see the diagrams, the use cases are there but not the diagrams.
If a create a new project and import the package into that project then I'm able to see the diagrams so I know they are there.

It seems that I have to do some kind of refresh or something in the original project to make the diagrams reappear again, but I don't know how to do that. Any suggestions how to get the diagrams back?

Thanks!

- Mats