We do have an active contract. We are single-tenant hosted with Epicor.
And the answer from support was that they do not provide support for managing custom posting rules. They also didn’t walk me through the steps to find that posting rule ABT varaible that was removed in 10.2 (as far as I can tell). The PO Receipt num.
I guess their stance is “You must manually recreate any custom posting rules”
You might be able to export a custom rule from 10.1, and the standard rule from 10.2, and see what the differences are. Maybe you can just edit the XML exported from 10.2 to include the customizations in 10.1, then re import it.
But not like you don’t know… THIS COULD GO VERY VERY WRONG