Incompatibility between 7.4 and 7.5?

I was disappointed that I couldn't import a file cabinet from a 7.4 site to a 7.5 site, but now I found out that I had to upgrade my Desktop Apps to use them on the 7.5 site. Now I can't use the Desktop Apps on my 7.4 sites. Is this going to happen after each upgrade? Is there a way around this?
Thanks

Hi Mike, 

this is expected behavior. Export/Import files are usually not compatible between versions.
Same for Desktop Apps. As a DocuWare Partner with customers on different Versions, I have 7.4 Desktop Apps on my PC and use a VM for 7.3 Desktop Apps. Once 7.5 starts to roll out, I will have a VM for 7.5 Desktop Apps as well.

Greetings from Germany,
Simon H. Hellmann
DocuWare System Consultant