DukeLeto7 Testing using this versions seems to have fixed the issue for me. Kai is gone, items and harem list are back.
However I appear to have stumbled into another possible issue. The Ardford Influence calculation at the beginning of the Ardford IW aftermath section does not appear to match what is stated on the wiki, or in the spreadsheet for it in the other thread that Fulminato made, or in the calculator. Either all 3 of those sources are collectively wrong or there is a mistake in the game codes calculation.
In my situation, I had:
Trin alive & copied lecherous priest: +1 ardford influence
Hester reply "Acceptance for the succubi": +2 probability
Herin promoted: +1 ardford influence
Succubi accepted at gawnfall: -1 ardford influence
Janine help in elven forest sent to Ardoheim: +2 ardford influence
Fleet: Order off: -1 ardford influence
Total (in theory): 2 ardford influence, 2 probability
Total (actual): 1 ardford influence, 2 probability
This 1 missing ardford influence is a problem. Testing one by one shows that the discrepancy is the 'Trin alive & copied lecherous priest' value. It actually gives +0. I'm unsure if this is intended or a bug where it's not being added correctly.
Here are some saves as an example: https://mega.nz/file/6k9EFSYT#9g32fv_dQFi73tdn5w_NOacdvR5p2jGmxUIKNUJZPgo
Save 9: End of IW aftermath Tak'kan section, no save editing
Save 10: Start of IW aftermath Ardford section from save 9. Has 1 ardford influence, 2 probability, priestess is present
Save 11: A copy of save 9 but with save editing. Switch 2696: Priestess Down, 2697: Priestess Known, & 2698: Priestess Copied are all turned off.
Save 12: Start of IW aftermath Ardford section from save 11. Has 1 ardford influence, 2 probability, priestess is not present
The only difference between save 10 and 12 is the presence of the priestess to speak with; they have the same ardford influence. If the 'Trin alive & copied lecherous priest' value was supposed to give an extra +1 ardford influence, then save 10 would have 2 ardford influence instead of 1.