This bug has been wildly frustrating, considering they took over a year to even put out a partial fix, so my friends and I were incredibly frustrated to run into the same issue as you a couple of weeks ago. We considered quitting and waiting for Obsidian to put out a fix that fully solves the issues with the Hedge Lab Ascent data, but opted instead to continue playing since the only other achievement we needed was 'Grow Big Again' and that was something we could do while we waited. While doing so we hypothesized and confirmed that entering NG+ actually fixes the problem with the 'Been There Done That' BURG.L quest, and after re-acquiring the three field stations that lock themselves behind world events in NG+ the quest completed and the achievement popped.
To be clear, when we entered NG+, the BURG.L quest still said 107/108 (although it was likely actually at 105/108), but collecting the data for the wasp nest field station, the undershed field station, and the larva cave field station did the job.
This is a dumb workaround, but we were really sick of waiting, so at least it's possible.