i have a vertical bend (see below: bend ends are nodes 10 and 20).

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10
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15--20-------

pipe is 14" so:
bend lenght 10-15 is 534mm
bend lenght 15-20 is 534mm

i had to insert a vertical dummy on elbow:
-i modeled a rigid pipe from node 10 having 534mm lenght. this pipe start from node 10 and go to node 500(node 500 is about the same as node 15).
-then i model the real dummy from node 500 to node 520, lenght 200mm. in node 520 there is the vertical support.

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10
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15[500]--20-------
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520
^


when i extract the iso i have a "disconnetct" error in node 500. how can i solve this problem and extract the iso without disconnected error?

thank you