I have tried resetting, turning [b]OFF READ[/b], Turning on READ and DRAW the Volume to were I want it and still Jumps at curtain measures. I have checked the Track very closely and I have nothing , not even in the Piano roll, nothing that triggers this "thing" ... any suggestions ? many thanks in advance

Hyper draw volume interacts with volume TRACK automation. I would bet that you've got some volume automation on that track too!

Hi Zwski, I agree with Steve H! Also have you checked for any cc data written to the region in the Event List?

Many thanks Steve H & Rounik, it was just like you said! I had Volume automation on it too :-/ thank you very much !!! /Zwski