Ok, so I successfully converted my History textbook, but this happened.
Normal:
After Conversion:
So it went from 480 pages to 8500 pages. It made all the text huge! I do see an option for "Disable Font Size Rescaling" in the conversion "Look & Feel" tab. I was wanting to know if this would fix it. I would try it out, but it took like 750 minutes to complete the conversion last time, and I was surprised my laptop didn't die once while doing it. So I wanna make sure I know how to fix it before trying again.