It will be better if Softrak can solve the issue instead. I opened the AP Invoice Batch Listing and I got the message that the printer didn't exist and it will use my default printer. When I opened the AR Invoice Batch Listing report, I didn't get any message and it used my HP3015 printer. Therefore, I am sure both reports have been saved with different printers settings.

PS: I didn't put the link here as it will not be accessible for everybody.