DATA MODELER 3.0 -Loss of the fields in my file DMD - Where are the fields?

Hi to all!
I have a serious problem with version 3.0. After working to create a relational design I saved the project. Then I moved to another folder, e tried to re-open the. Dmd, and to my surprise, I lost all fields, PK, FK and indexes.
I tried to import the DMD, and the import, displays the correct fields, select them, and when I import, again not the fields appear.
Can someone tell me what the problem, and if you can solve?
Thanks in advance,
Raúl.

Hi Raúl,
Then I moved to another folderCan you explain in details that operation.
Philip

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