Resource asignments on LOE bars

I am running P6 v7 sp2 amd I trying to find a solution to this problem. I use a LOE bar like a hammock in P3. I assign x number of hours and assign a resource. I tie the LOE bar accross a number of activities using SS on the first activity and FF on the last activity I want it to cover. While I am building the schedule, these activities may move and the LOE bar will move with them when I recalculate. In this example this is a schedule that has no actual progress and no activities that