AAAAHHHHHHHHH! Just got off the phone with Sage and my BP has skyrocketed. She told me that the users just have to change that field in Setup Options (because you can just snap your fingers and have THAT happen when you have to get a ton of users out of the modules) and then they can delete. But this was after telling me that Reorder by Warehouse had to be turned on so that the system KNEW IT WAS MULTIPLE WAREHOUSE. ExCUSE me, sister, but I believe the Use Multiple Warehouses check box takes care of THAT... conversation went downhill from there, since she was being stupid. Her final note was that it's been working this way for some time, so it must be correct. Allrighty. Cash Receipts has failed to clear the PostingToday field sometimes for quite some time, too, so that is apparently correct, as well.
If I never talk to THAT particular support person again (and I have no idea what name she gave me - too heavy of an accent), it will be too soon.