Having exactly the same issue and flagged it almost a year ago. Think it might actually be worse now with Notion Formulas 2.0 as previously some of my fields came through correctly but now almost none of them work. Also before I was able to repeat/mirror problematic fields in additional formula or rollup properties but I can’t seem to get that working either. Very frustrating not being able to access this data.
Any insight into the nature of the problem would be massively appreciated @MutedJam, as always.
Cheers