I recently got a Studio TM (not as a package). I included it as secondary TM and read-only.
This is what I found then in the folder:
I am not complaing about the size "wasted" with 822 bytes, but wouldn't it be better to save this kind of hook (assuming CT needs this) as .log or maybe .tmxro rather than .tmx, just to avoid confusion?
Or is it better to keep the tmx, just in case the TM is set to writable?