OK, I see the logic in this and actually I did this at the start. I recorded the tracks in the project window, created a folder, ‘moved’ the tracks into the folder and then began the group editing.
I did figure out a way to remove the tracks. In the far left column of the project, in the area that displays the vertical selected track info, channel, inserts, sends, etc., the various tracks are displayed in vertical fashion as you click on the grouped tracks in the project window. These I assumed, were the track icons I could drag out of the folder but could not. OK, above these sub-icons is the main folder icon indicating the ‘folder channel’. If you click on the actual folder icon the various tracks will display once again in the project window. From here it seems you could work in unison with the folder tracks or not, but I elected to remove the folder channel which left the original tracks once again in the project window, now modded by group editing, BTW, and get on with what I needed to do.
Now, none of this is written in the manual - that I can find - so hail the stumbler in this case. Split, thanks for checking in here.