Im having a problem with the cps function....

In part 3 of the CPStut I have to attach the ear to the head..
..I've done that and than we have to convert the polymodel to cps again in the minus X...
..if I do that...then Maya starts jappin' about that my model contains Zero Vertex Tweaks etc.

What did or do I wrong ??
How can I get my normal modelhead back??

pic below shows what happens when I hit Zero Vertex Tweaks...