Boundary surface and split surface not work properly

gap.gh (55.8 KB) I need to create a boundary surface, but there is 1 gap that fills up. It should be an open gap. How can I create a surface with gaps? I tried split surface as you can see, but didn’t help either

Flatten your Geo input to Split Surface.

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Remove duplicate curves.


gap_re.gh (63.9 KB)

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