Can't delete duplicate grading criteria

[gr8gonzo0]

For some reason my drawing had created several duplicates of my grading critera. For example, my drawing has the following critera:

Cut to Surface

Cut to Surface.1

Cut to Surface.2

Cut to Surface.3

Cut to Surface.4

I did not create all these criteria, they just appeared one day. The problem is that I can't seem to be able to delete the duplicate ones. I get an error saying that the criteria "is currently in use, so it can not be deleted". I have deleted all the grading in my file and I still get this error. I have tried RECOVER and AUDIT several times with no luck. 

Any suggestions?

Thank you.

[busley7TUUJ]

ArchD,

THANK YOU THANK YOU.  Like everyone else I was trying to clean up our company template and this was the last item giving me FITS.  Your solution worked perfect.  Only wish I found this post sooner