Another thing to try when you are exporting a song from Biab to RB is before closing Biab, Right click <Master> to open the drop down menu. Select <Set Mix to Flat, Dry and Center>

This will change the current volume, panning and remove effects of the current BIAB song and style. The volume defaults to 90.

When you open the file in RealBand, the tracks will all be at the default volume, panning and without effects. If the volume is too low or too high, adjust the default volume up or down accordingly when you do the Mix, flat, dry and center save in BIAB. Some people use this feature and set all volumes to 127. I've had some tracks clip in RB when I've done that. I can always normalize the tracks in RB if they import at too low of a volume to suit me.

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.