Our sequence of processing Purchase Orders/Receiving Inventory/Entering Vendor Bills has always occurred in that order.  Upon receiving a vendor bill, we would choose vendor, enter bills & choose the PURCHASE ORDER for which we want to enter a bill.  The PO was shown whether received in full or not.  Since the update to 2021, the only option for entering a bill is from the item receipt(s); the PO is no longer shown to "bill from". The issue with billing from the item receipt is that the field "Qty on Bills" on the PO is not updated/populated.  This certainly can result in AP issues, duplicate payments to vendors. etc.  Seems there is a glitch with the software as furthermore on the Bill itself, when the Show PO button is clicked it opens the Item Receipt.  Tech support advised us to delete/re-enter PO's & redo item receipts.  This is not a practical solution nor would it solve the problem.  They stated that they could note escalate to their programmers to which my response was quite heated!  PLEASE HELP!