Arm Poses with Draggable Handles Not Playing Back from Start

Hello! I'm having a little issue that seems to be with draggable handles and recording. When posing my character's arm and recording it - either "live" or 2 frame captures - the model is not retaining the full pose when playing back from the start. The arm moves, but the draggable elements of the rig seem to be missing. The strange thing is that it will remember the full pose correctly when I pause mid-clip and start again or start playing just a few seconds before the pose. I'm not sure if this makes sense. I appreciate any help I can get!  🙂