The client runs rebuilding stock with the first checkbox ticked only.
8.5 2021-11-02 did not broke Stock List report for other our client with both checkboxes ticked and the first one ticked only.
Some version from 2021-09-xx had problems with that.
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...