Steve:

If I understand the problem correctly, you would like two adjacent measures to play like this:

D D D C, D D D D

and that works OK for you in one part of the song but not in another.
If that is correct, I would try to put that same sequence into a NEW file,
and play it using the SAME STYLE and see if there's any problem.

If it works OK in a new file, try deleting it from your original one, then adding it back in. I don't see any reason why it wouldn't work no matter where you put it in the song.

Let us know.
Thanks!
LLOYD S