Higher quality smarter belt immunity modules transform into default quality after walking on a belt with the module equipped. I can only suspect this happens because the mod swaps the module for a placeholder module and back to achieve the "smarter" part, but doesn't account for quality level when swapping.

I've made an effort to revive this mod today, since the original mod has long been abandoned. Now since I don't see much activity here, nor a way to contribute to this fork, I've published my own release here.

I've made an attempt to address your issue. So if you or other visitors to this thread are still interested, you can check it out. Feel free to reach out (on my mod page or GitHub) if any other issues come up.

Also a message for the maintainer. If you're interested in picking this up again, feel free to reach out.