visiblities in creo

when you cut through a model using the visibilites function it shows the cut as red. In Creo I am having a problem with old proe models showing the cut as if the model were a quilt. no red. just open or clear. very difficult to see. I was told it was a graphics problem but im thinking not. anyone have any ideas??

sometimes you can step it out and reopen and visiblities will work properly. but that does me no good for some projects.

thanks for any help.

Daryl