Another trick, similar to what Valandar suggested. Load a duplicate figure of the figure holding the prop. Copy all key frames for the orginal figure pose from frame 1-120 and apply to figure 2. Set key frame break fro this figure at last frame (120) This figure will now duplicate movement of original and then remain constant (unmoving). Parent the prop to this second figure. At frame 121 began moving prop as you wish it to travel for remainder of scene, since prop is parented to invisible duplicate, now frozen at frame 120, prop can be posed for remaing frames without figure 1 movement effecting it.