Hi Liz,
I’m sorry for the delay in getting back to you. This is a really great question! Currently, the method you described is pretty much the only way to handle this situation, which we do understand is far from ideal. There is a great feature request for the ability to Allow importing customer overpayments from accounting software to Breww, which we think would be a great feature and would solve this problem for you. We have explored the idea, but building it is a substantial and complex project, which in itself is not problematic. The challenge we face is that it hasn’t gained a lot of traction within the community yet, which makes it difficult for us to prioritise it as a top project. If you could add your vote to this feature request, that would definitely help move it up the list.
If you have any questions at all, please let me know!