Sorry Dave but you seem to be missing the point, or maybe I confused the issue by mentioning a specific track.

My question is why does a RealDrum track play at a louder volume when generated on ANY other track than the same RealDrum generated on the Drums track.

As I said earlier, it's not a big deal as there are numerous ways to adjust tracks relative to each other inside BIAB or DAW of choice, but I'm curious to know why it happens and if it can be avoided.

Regards
Vintage