AutoCAD Inventor :: Texture Purge To A Style As Bump

I was messing around with style editing, and added a texture map to a style as a bump.  The bitmap I selected, however, was on my hard drive, not in the project search path.  Now that I would like to check this part into the vault, I get the attached error message.  I have since tried deleting, copying, moving the file from that hard drive to a legitimate search library.... removed it from every style it was used in, purged all styles, basically deleted it from every place I can find it, including going through the model tree and checking each individual feature (over 50!) to try to find it.  It is still in the file somewhere, and I can't seem to figure out where.  Is there no way to find and purge this offending bitmap?