I have several folders inside a VEP instance. Lets say I have one folder with "Output" busses and one to the right of it, with "MIR" bus routings.
When the Output folder is closed, and I select say four tracks in the MIR folder (by rubberbanding), I also secretly select the same "area" of tracks in the closed (Output) folder.
This means, when I do groups actions on the MIR tracks, I also change values on the hidden, Output tracks.
This applies to all closed folders to the left of the tracks I am working on.
This have given me a lot of heart ake, when I have been routing my orchestral setup, having to redo a lot of stuff.