Slitherine

Are there OO users here who know how to load PzC files like equipment, campaign etc. into the software's "Calc" part to get a correct table with tabs being converted correctly to colums? And of course how to finally save it all again for PzC without messing it up completely

I think it is possible but I'm not sure how exactly. I just tried with OO 3.3. but instead of something readable got only gibberish

I was only able to do it, by renaming the file(s) to extension csv. Than the import window will be open when you're open the file.
Choose TAB as the delimiting field.

This works well indeed, thanks