Could be some of your Drag & Drop settings are not configured correctly. On this video (Mac Drag & Drop) around 45 seconds in it describes what settings you need in BIAB.

https://www.youtube.com/watch?v=uuAP5gjp_-8

If you still can't drag & drop after checking settings make sure none of your individual tracks are soloed.
This stopped me dragging and dropping non soloed tracks from BIAB to Reaper


I don't use Mac or Sonar either but hope the video helps.

Last edited by Kev T; 01/25/17 06:33 AM.

BIAB 2022 PLUSPAK (ext HD), 49PAKs, STYLESPAKs 1 - 6, Win 7 64bit PC, REAPER, Ozone, Adobe Audition CS6, EZ Drummer3 + EZ Keys,Soundcraft MTK22, Behringer X Touch Universal Controller,, SE Gemini/Rode NT2/Neumann/Shure mics