have you got a working image of the robot? In that case take a complete image of the robot and an archive. Restore the old working image. Restore the archive you just took ontop of the newly restored image. Then you should be good to go. The image may be old, does not matter, archive will restore programs, mappings, bus configuration, etc.
If you havent got an image of a working state this will be more complicated. I would contact kuka to see what can be done. Have you fiddled with the authenticationconfig.xml or similar lately?
I only uploaded a project from WorkVisual with profinet configuration and nothing else.