Scott - Did you get an answer here? I find that the issue is happening on whatever upgrade happened AFTER Quickbooks Desktop Pro 2019. I still have that version and my customers have an upgraded one. THAT is the one it's no longer working with. I am a third party software like your Campground software, so I have customers experiencing exactly what you have. The software dumps into Undeposited Funds but it is not there for them to make a deposit. Just wondering if you got a fix.

Thanks!

Melissa