Phil, That's the problem, I don't have all the project into SQZ files. I have full copies of them in other locations, just not SQZ.
Do you have a TMG backup of your V5 project data? It will be a file with a .SQZ extension. In that case there would be no need to reinstall V5. You can simply RESTORE that file to TMG V7.
Phil
Wholly Genes Tech Support