So I encountered a problem back at the beginning of the expedition, after about a week of playing, the community research progress topped out, and everything was unlocked. Neat! I did some missions to help, and now had all the unlocks. But one day I booted up NMS and the research meter had been set back to 0. I wasn't too worried, as there were 5 weeks left in the expedition. But now the expedition is drawing to an end, and I only just got tier 2 unlocked. I DID submit a trouble ticket with HG, but have heard nothing back about it yet, and the only things that I have found as fixes are for problems that were back in 2020/21. I did try those "fixes", but no luck for me.

Overall this problem doesn't make the game unplayable by any means, just kind of a disappointment that I may not be at tier 4 with others when the expedition ends.

Thank you, I indeed was. This is the first time I've played in years, either since the introduction of expeditions, or I played between them last time, but either way they were both new features to me and I just assumed they were intertwined. But it definitely seems you are correct, and would also completely explain why it reset at the beginning of a week and also why I couldn't find any mention to anybody else having the "bug/issue"