Ok - this process and profile system always was the weakest point of the software.
Right now i switched from the osx version to windows, and already having lost my settings in the past, i exported the last factory file that i had open, and the fff profiles thinking i am safe this time..
..aand its all gone again.
I tried to import them now, and yes they show up with the proper name, but not much else.. all settings are lost - even the printer defaults..
I don't think it is about version numbers - and actually i don't want to lose anymore time with this.. i can read out some of my values from the .fff xml, still this has to be fixed as i more than once lost my settings, and surely am not the only one.
edit:
so the second time around some settings came back (first import the fff, then open the old file - maybe because of that, maybe not..)
I assume some settings are saved in the file along with the geometry, and some not.. And a quick glance over the quickstart pdf and the support section of the website is not saying anything useful about this.
I get it that the possible combinations of printers and profiles on the same software installation pose a problem - but this needs to be addressed.