I'm using JV-1010 with Cakewalk 8 and some patches sound different when they are assign to chanell one than when assign on other channels. E.G SESS-090 sound. I'm wonder if is the Cakewalk or my synth module.

This is normal Look at sounddiver to see how effects are assigned. Only 1 multi-efx available in JV-1010 or 1080.