Suppose I have two track templates, each of which contains a track in a folder (let's say called Synths for the sake of argument).
If I insert both track templates, I get two folders called Synths. Since *I* set up the track templates, it's pretty likely that I don't want two such folders created, so if a folder exists with the same name (at the same level in the folder hierarchy as I'm inserting into), then the track(s) in the second template should insert into an existing folder.
I seem to remember an older version of SONAR (8.5?) supported an option for this, but this was lost on the migration to SONAR X/Platinum.