Hi and thanks, Bristol_Jonesey
I checked and it's not locked screen sets.
The thing is that, if I close all folders and reopen the project in X2, the folders are closed.
But all projects I open in X2 for the first time, that I created in X1, will be opened in this state (with all folders open) no matter the screen set settings :/
It's not the end of the world, but it's quite time cosuming to have to start and close all folders in X1-projects I want to continue working with in X2 :/
So it would be nice if there was some kind of "close all folders"-function somewhere