I have archicad projects that span 3 versions of archicad.
I am not willing to pick all the objects of an earlier version of archicad and transfer the parameters to the latest version of archicad.
I wish archicad or one of the companies that writes software and add ons for archicad would write a Library check and cleanup program that would automatically search through the object files/libraries and give the option of updating objects of earlier versions of archicad to the latest library.