Reconnecting split stereo files anyone? In Logic Pro X

Sorry, I can't find anything about Universal Track Mode in LPX. I even read it can't be turned off anymore...

Is this right?

Man, I hate to have to go through this, but I promised myself I'd learn Logic if X version came out, so here I am, my first day...

Ok, I think I solved it.

I got these sessions sent to work with, that were tracked in Nuendo, and naming is different like filename+space+L instead of Logics filename+.+L

So, renaming the files, I just have to drag any of the mono files, and along comes it's pair as a stereo region, dropped into a stereo track etc.

Thank you,

will use extensively... but still I need to rename in Finder. When the L and R are preceded by a space, it doesn't recognize the slit stereo thing...