LinkProxy update with previous duplicated edges fails

[kolczyk]

code before editing (with duplicated edge):

  ("activ2houtput_creb1_pinput"
     :TERMINALS ("activ2h.output" "creb1_p.input" "activ2j.output" "activ3g.input1" "activ2i.input1")
    :NODES (("1188" "1078"))
    :EDGES (("0" "-1" NIL) ("1" "-1" NIL) ("2" "-1" NIL) ("3" "-1" NIL) ("0" "-1" NIL) ("4" "-1" NIL)))

if e.g. the nodes activ2h and activ2j are deleted the duplicated edge remains in the list, but one of the valid ones is deleted :(

  ("activ2houtput_creb1_pinput"
    :TERMINALS ("creb1_p.input" "activ2i.input1" "activ3g.input1")
    :NODES (("1188" "1078"))
    :EDGES (("0" "-1" NIL) ("0" "-1" NIL) ("1" "-1" NIL)))

Link update after renaming one of the connected nodes in the initial link repairs the link..