PO_PDFPurchOrder.php problem in 4.10.1

[PakRicard]

Hi Phil:

Probably on the upgrade file, should be updated to the admin userid, by all previous information would be lost. But otherwise, a manual change can be quite tricky if an installation has some thousand PO's.

Regarding new PO's don't know yet. Users complained about the old ones. If new ones have the problem as well, users will complain soon, and I'll post it.