"Improved IAA" is actually incorrect. They reduced IAA compatibility. Before this update my live set consisted of AUM running Cubasis and DM1. DM1 was the tempo master for my Synthesizer so that I could play Arps in sync with the drums. After this update, DM1 no longer sends midi sync to my Synthesizer while loaded in AUM. Also it does not receive midi sync.. a drum machine that cannot either receive or send midi sync is totally useless and this update breaks IAA functionality completely. Also when switching from AUM to DM1 it stops playback which is annoying but I've become used to that so I never switch back to AUM once a song is started, still annoying though. Only way to use DM1 live now is outside of AUM, which is unfortunate since I've done all my volume adjustments in AUM... probably time to start bringing a laptop to gigs.