There are very standard chords and resolutions that BIAB/RB (including Real Tracks) rarely gets right. The example here (in the key of C) is G13b9 - G F B E Ab - with a typical 2-5 application being Dm7 G13b9 Cmaj9. What usually happens is that G13b9 gets automatically replaced by G7b9.

The trick is to recognize the B E Ab(G#) as an E major triad and enter either E/G or E/F. In the latter case of E/F, have the bass play G.

There is a huge array of workarounds like this. Let me know if you want a particular sound, like Cm11b5 (which doesn't formally exist in BIAB's repertoire), and chances are I can get it for you.

Aleck Rand