Okay, slightly different than described above but not less an issue:
The painted instances are still gone and the list of imported instances is still empty. I can though import and paint new instances.
BUT: loading the level with GM mode I see all recent updates made with the map but still the instances. (the GM mode save isnt that old and definitely newer than older versions of my map that suffer exact same loss of painted instances)
That means the instances are gone for good and i have to paint all over again (or any chance to restore it). There might be an inherent bug in the level (levels as more are effected) that will create future problems once i redo all the painting work?
There still is the possibility of not having a bug but that the stupid part is on myself (which i would prefer to be honest)?
Any HELP appreciated!