Originally Posted by
izzik
There is a recent data point where someone said that paid upgrades on AA prior to departure date no longer credits as J with Finnair Plus.
https://www.flyertalk.com/forum/36725365-post1258.html
If you are heavily relying on this particular aspect, you may want to confirm ... or make backup plans on how you would earn status with AY+.
This is very helpful, thank you! Back to the drawing board...