Thanks for posting your suggestion and glad to hear you’ve found a workaround. I’ve been trying to use PDF Expert as the markup tool, but I’m finding that the changes aren’t reflected in DTTG. I’m using the method described in this post but haven’t been able to get it working yet: Help with DTTG and PDF Expert
How are you moving files back and forth from DTTG to/from the editing software and what editing software are you using?