Startdrag problems

I’ve searched and can’t find anything to solve this problem. I have a movieclip that I use the startdrag function on. I have a MOUSE_DOWN for startdrag, MOUSE_UP for stopdrag, and MOUSE_OUT for stopdrag as well. When I’m dragging the clip and my mouse cursor goes over a stationary clip the dragging stops. I’m sure this is a common issue, but I can’t find a solution. Any help?