Very welcome, BAM.
The idea is to turn off the old “enhanced converters” in order to use the new in-house .docx converters instead, which seems to have worked for you at least to some extent.
From: https://forum.literatureandlatte.com/t/test-scriveners-new-docx-converters/45402/1
If problems persist, I expect tech support would love to see a sample file to help them to iron out any software glitches.
Good luck with your work.
Slàinte mhòr.