synchronize Cataloge with exported changed Photos to source

Hello,

I have quite some difficulties to get proper use of Cpture One Catalogues "...cocataogdb".

I was able to create a catalogue from on Windows directory. Took 8 hours, but worked. (Same Directory "went" into Bridge within 5 minutes!).

Now I picked one Photo (ARW) and enhanced it with the very good tools of PhaseOne.
Only the anhanced version was visible in the catalogue from then on - no way to compare!

Then I saved (exported) that new version into JPEG into the original Win-Directory - worked fine, it is there together with the original ARW.

But that JPEG did not show up in my Catalogue - still no way to compare it with the original within may catalogue.

Now I tried to "import" that JPEG view into my catalogue - now my original Catalogue seems to have been gone and only that one JPEG is visible!
Physically the whole catalogue is still stored in "cocatalogdb", but I can't get access to it any more! 😁

What to do now???