Could not import GPX course under 2.90 ?

I tried last week to import an .GPX (by copying it in Garmin/NewFiles) to transfert it as a course. It work great

Now, under 2.90, I tried with different .GPX files and my F5X never shows the course in Navigation menu. Indeed, the corresponded .FIT files doesn't exist in Garmin/Courses folder and no issue is reported :mad:
I even tried to do it via BaseCamp (which actually juste copy a temp.GPX in Garmin/NewFiles..), but it also fails...

I tried one of this .GPX file with my old F3 : bingo, it's works great !! Then I tried to transfer the generated .FIT file from my F3 to Garmin/NewFiles folder of my F5X : nothing again :mad:

Is it a bug from 2.90 release ?? Do you experience the same issue ?