How to delete so many component properties in OrCAD Schematic?

Hi,

I have a design which some parts have been copied from various other designs. When I look at the part properties I see that there are so many properties that are not needed for my design any longer:

When I try to delete them I receive below errors:

I am wondering if there is a way that I can get rid of these all unnecessary properties?

Thanks in advance,

Hossein