Yes it works like that. If the order has an invoice address but no delivery address, then when you create the delivery record, it copies over the invoice address and this is what prints on the delivery note.
This is not the issue of upgrade SERP. But serverip.dat in this case contains the value: 192.168.88.12:1301, so this is local IP of the server with SERP.
Anyway I don't understand what do you me...
