Just a heads-up for anyone with the Core Checkout migration scheduled.
At time of writing, the current build doesn't seem to be properly handling customer Default Discount Percentage field for us, resulting in payments for amounts lower than the invoice total, and "partially paid" orders. That may not be the full extent of the issue - investigation is underway.
If you use that field, and handling dozens of "partially paid" orders sounds like an intolerable inconvenience, then asking support to delay your migration may be warranted.
