Why is there no option to save a template of Busses as there is for saving Track templates?

Buss routing is included in track templates, but one thing I have never tried is loading track templates that originally fed the same buss when saved. I am not sure if it would route them to one or create a second.

I use a lot of track templates and although I usually find it routes tracks to the existing bus with the correct name, in some cases I've found that it created a duplicate bus. Perhaps there is some other factor which helps it decide whether a bus in a template matches an existing bus or not. It's possible that I had edited the bus in one case, so instead of losing the differences to the second version of that bus by forcing the tracks through the first bus it made, it gave me both versions of the bus and left me to sort it out.