How to remove a ghost object (asm) when revising a prt file

My coworker opened a single part & drawing for revison.

Altered one sketch.  Opened the drawing and added the necessary dims.

Upon saving the part a ghost assembly file was generated of a very old legacy file.

The legacy cad file itself does not exist, yet an assembly file seems to be linked to this part.

Question:  How can we remove this assembly ghost file so we can check in the revised component part?

Simply trying to delete the ghost alone DOES NOT work.  You get a referential integrity error message when attempting a check in or one when trying to remove only the ghost as WC says the ghost is attached to the (revised) part.  As a point of reference, the ghost does not appear at the lower revision or until you first save it.  Attempts to backup or save as have the same affect.

Re-creating whole files is not an option.

Any real step by step procedure would be greatly appreciated.  This is WC9.1, Pro-E WF4.0..

Thanks