Attaching 3 Headless Client reports and One dedicated server report to show that a similar event is happening in either settings.
A litte note on how data is print on the rpt file:
As soon as a group of AI is spawn, changes to their skill levels is print to rpt followed by a skillFinal print to confirm the immediate compulation of intelligence. All is as expected there.
Two or Three times in the mission's time another script that checks the skillFinal of allUnits is run and its results printed on the rpt. You can spot it by the amount of lines and there is where the change of intelligence is spotted.
Also enough times a unit by the name of Bis_SUPP_HQ_EAST is shown at the top with moderate intelligence settings and I have not idea what it is.
This issue started maybe a few weeks back. Not sure because all that time we thought it was our bad shooting and I was trying to get the AI on lower level and finally I realized it did not make any difference no matter what I did. Did learn a lot in the process though :)