Enharmonic changes are lost when copying music

Hi,
I just copied the left hand of a piano part into the bass part. I noticed that all enharmonic spelling changes I made were lost. Is there a way to preserve those when copying music?

It seems to work for me. Can you provide a sample document, or a set of steps that create the problem?

Are you working with a different Tonality system? Does the Bass staff have a different key signature, or transposition?