Just for my understanding:
The file you linked to here, is that the file you appended that object from (aka the source file)?
Or the file you appended it to (aka your target file)?
If it is the latter, you might want to also upload the source file, so we can analyze what might have gone wrong.
If it is the former, there’s indeed not much you can do, as appending a garbage object can only result in garbage.
IkariShinjl - It’s the “former”, and I’ve come to the same conclusion. I’ve disassociated the parenting and, piece by piece, trying to reconstruct it…PAIN! Thanks also to Daedalus_MDW for the help - spot on!