Stabilize Motion: new track point?

i pan across landscapes, jerkiness in movement of pan - don't know whether blame tripod or arm.  ae great motion tracking , stabilization, , can pans doing stabilize motion first (which applies results anchor point property) , using more sparse position keyframes recreate smoother panning motion.  if pan more width of frame, or several times wide?  in "analysis" step, when original track point run off edge of frame, need way "start over" new track point near other edge.  tried dragging track point on there, still "connected", tracking gradually moves width of frame , zips on other side in 1 frame!  how "break link" , tell ae starting @ frame have new point instead of continuation of same one?

when reach frame want offset track point, place cursor inside inner search box (but not on center cross) , hold down alt key. cause cursor switch small white arrow , move icon. keep alt key down , drag tracker want continue tracking from. offset search boxes leave attach point (the cross) was, won't jump in resulting track.

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