? re: making midi files more consistent


Often I compose using midi files generated in Band in a Box (BIAB), then drag and drop them into tracks in Logic. Later I edit them to my personal preferences. Sometimes I will replace a measure or two here and there, using the step input keyboard.

My question is, what's the best way to make the files generated in BIAB consistent with the ones I created directly in the piano roll editor? I noticed that BIAB files velocities tend to be very low compared to the ones I've created. Is there a trick or technique for making them consistent with each other?