Whups… I should not have taken in sorted index (red line) - fixed now uses the unsorted one (cyan one):
Here is fixed file:
Pack curve1.blend (116.1 KB)
Huh? I get exactly the same result… I did it so the network can be easier to understand as it “labels” the attribute and you can see it in the spreadsheet more easily. You can totally replace it with a capture, it should not make any difference. I added a switch in file above to prove the point. Take the named attribute out if you want.
Edit: no more capture… ok?!