I knew I was tempting fate when I said I knew Jim and Charlie could do things in BIAB you can't in RB!
Not in this case. Both programs can open midi files on a single track or split all the midi channels onto individual tracks. If someone is working on a project in RB, there's no need to move the project to BIAB to open a midi file. If they are already in BIAB, there's no benefit to open and move the project into RB. In fact, in the instance of BIAB to RB to only open a midi file in the format wanted, there are more disadvantage than advantages.
Two instantly that come to mind is the already mentioned, MultiStyles, and another is the flagship features of BIAB that aren't available in RB. To a user that works a lot with midi, losing more than a thousand styles primary function could potentially be a big deal. What plus to opening a midi file in RB offer that equalizes the loss of a thousand plus styles in the format the user is working in?
In regard for concern for the new user, Jim, although a seasoned user of BIAB/RB, had not previously imported midi using drag/drop. He was amazed at the ease, speed and efficiency of the method. There was no manual assigning channels to tracks. The Mixer automatically adjusted to display the imported tracks avoiding him manually having to do so. His experience was the same as what a new user would have and he was impressed, not confused. .
OM expresses BIAB/RB plus and minuses as a problem then gives a lengthy dialog of RB solving a perceived BIAB minus. The complexity he sees with MultiStyles would save him at least a thousand dollars in time and labor if he were recording in an actual studio. MultiStyles would automatically do what he describes doing manually between multiple programs, generating, importing, exporting, comping and editing tracks, and adding instruments to the existing style instruments. Extreme examples are given that are unrelated to opening a midi file. It's off-topic and complicates a simple correction to a inadvertent error in Jim's explanation.
There's no competition between BIAB and RB and there wasn't a good basis to take this thread off topic. I use both programs and promote both programs but there wasn't any benefit for RB to be brought into this thread.