Playing with the old and the new version (tips or traps)

[Duncton]

But it can be a lot random. Recently one of my players gained 10% skill in 12% condition loss. And sometimes you gain none (talking about U21).

I've noticed that the first training after a match I didn't watch gives a lot of % (25% with 22 players on 1st drill today). Maybe match progress from games you didn't watch is translated to that first training?