In System > Settings > Configuration, you can select a Backup Plan. The default when upgrading from earlier versions is None. What is the difference between None and Level 1? Both options seem to create a TB.TXT at the scheduled time.
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...