can't delete or edit unlocked and ungrouped object

[cocoloco]

hi! I opened project after a year. I think they were both created in archicad solo  (archicad 25 or 26 ) and I do have now archicad solo (29)  as well just latest version. 

After opening the project and wanting to make change orders, the taps/faucets (only) can't be moved, edited or deleted. I think I have tried everything... unlocking, ungrouping, .. all. but no change. 

I don't know what else to do and I can't hide them either.  

 

[Lingwisyer]

Tried repairing the file? Maybe they are in an error state.