Hairpin missing in part, but not score

Hello all, I’m preparing parts and noticed that some hairpins are missing, but are in the full score. For example, I have a dotted half note that begins forte and ends mezzo piano, but the hairpin is missing between the dynamics. I tried moving the mp dynamic over hoping the hairpin would appear, but no luck. Is there a way to stretch the length of an individual measure to get the hairpin to appear? Or any suggestions on how to approach this problem? Thanks!

Can you attach the project here (in a zip file) so we can take a look and see what might be wrong?

Hello, Daniel, I’ve emailed you a zipped file. Thanks!