I'm not sure if anyone else is having this problem... I already have a support ticket open for it. It's a bigger issue than it seems for us because we do dozens to hundreds of sales receipt transactions a day.
I discovered that for about the past 2 months (still checking if it's more) if a staff person deletes a transaction because it's wrong, it does NOT sync with QuickBooks Online and remove the transaction from QBO. This is very problematic because I now have a possible double entry for the same transaction.
Because of this, I have to go back and reconcile all of my sales receipts in QBO against Method. A very time consuming activity. However, I have uncovered *thousands* of dollars in duplicate transactions which have falsely inflated my revenue.
Anyone else have this issue? Try making a sales receipt in Method, then sync, then delete it. See if it removes it from QBO. If it doesn't and you use Sales Receipts often, you have a big headache in front of you.