Hi Cristoffer! This issue has been reported and was fixed in Build 19 of 8.5 191126. It should be made available by the end of today for you to download from standardinstall.com. Thanks
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...