Users need to be able to pull the following System Reports and specify only Cash Sale Cases, just like they can all the other case types.
Detailed Items Sold
Thanks to the author's very comprehensive description, I was able to completely fix my dilemma after reading this post. I posted my review on the assignment, which you may read. Thank you so much for your time and consideration.
Currently, it is not possible to filter the Items Sold System Report by Case Sale Cases. Cash Sale items only appear on the report if no Case Type filter is selected.