Alright, well I feel like quite a goofball. 🤪 Turns out on the MyWorld download page, there is a dropdown for version numbers - and 8.50 is in...

That's what I would have assumed as well, but according to the GRX1200 getting started guide (grx1200_gettingstarted_en.pdf), one has to explicitly in...

Hi! It looks like you already got an answer for QGIS, but I thought I'd provide the answer for ArcGIS Pro as well, just in case anyone else runs acros...