RB should give you the opportunity to place each midi on a separate channel and most users find it's preferable to BIAB to edit midi.

In BIAB:
With a Midi file loaded, Open the Sequencer to determine the number of midi tracks and the assigned channel.

Select the Edit Menu - Copy Special > - Copy\Move Tracks selection.

From this window you can select midi instruments and move the midi data to a BIAB Mixer track. For instance, if the midi file on the Melody Channel has a bass on channel 2, in the Copy\Move window, check channel 2 and move it to the BIAB Mixer Bass Channel. This moves the data and freezes the track.

With the data loaded onto the BIAB Mixer channel, you can assign any patch, effects, dynamics to the track. Depending on the data in the midi file, you may also be able to control volume and panning. Attempting to assign a RealTrack to the channel and have the RT respond to the midi data doesn't work. Midi, SuperMidi and Hi-Q midi does.

As an example, I imported a midi file of Proud Mary onto the BIAB Mixer Melody Channel. The Midi file contained 7 tracks. Track 1 was an alto sax patch and played the melody notes. I moved the remaining six tracks to the Soloist Channel. I opened the Edit Menu, selected copy special > command and then copy/move.

On the Soloist Channel, the Bass patch was channel 7. I selected box 7 and moved the bass patch data to the BIAB Mixer Bass Channel. I repeated this action to move the Drums patch data assigned to channel 10 to the BIAB Mixer Drums channel. These tracks are frozen but I chose to convert them to Artist Performance Tracks which also automatically creates a physical audio file of the track.

From the Stylepicker, I selected a RealStyle to play along with these midi tracks and I chose to mute the remaining midi tracks on the Soloist Channel.

I've attached a screen shot of the Mixer for clarity.

Attached Files (Click to download or enlarge) (Only available when you are logged in)
Proud Mary RT_Midi Mix.JPG (191.41 KB, 117 downloads)
BIAB 2025:RB 2025, Latest builds: Dell Optiplex 7040 Desktop; Windows-10-64 bit, Intel Core i7-6700 3.4GHz CPU and 16 GB Ram Memory.