Wrong loft sequence due to incorrect merge

Hi all,

I want to take a curve in rhino, array it (or series) and manipulate some of the middle curves in scale or rotation, I know this is not the most efficient way of doing it (Please show me a more efficient way if you know) but with this current method, when I merge and loft, it is clearly not merged correctly, and I wonder if anyone can help me fix this and teach me what I am doing wrong with the merging.

Explain.gh (16.2 KB)

Please use the Replace Items to fix your current issue, and fyi.

Replace Items Grasshopper Online Document


Explain.gh (10.5 KB)

interesting, thank you very much,

Or flatten and sort the list.

Explain_2026Jan6a.gh (11.0 KB)