Do Sage forms somehow ignore Report Selection criteria?

SOLVED

I have a request for a custom form code where, when printing an invoice batch, invoices with a specific terms code are omitted (without wasting a blank page). 

I tried report selection criteria, with a formula that 100% works fine (with no typos) and the print engine ignored the filter (even printing "False" when I dragged the formula field into the report... so the print engine literally ignored filtering output where Report Selection = False).

I use the same formula in Group Selection and it does what I want, but I can't help but wonder why it doesn't work as Report Selection?!?

Ideally we'd use a Terms Code filter on the printing screen but the Selection grid doesn't have that field (and we'd like to avoid setting up a mirror UDF).

I thought it might be something with the customer system, but I verified the same thing happened with ABC data in an SO form on my test v2019.  My guess is that Sage somehow had to prevent problems with report selection criteria causing mismatches with Paperless PDF creation, but it would be nice to know if that is the case.