there might be, but you can imagine the difficulty of guessing on a screenshot
post the GH file with internalized geometries to nest, or post both the GH and 3dm file
if you don’t know what/how to internalize stuff: Help Us Help You
I can play the guessing game and tell you the two wires 1 and 2 look wrong to my eyes:
looks like you are giving the longest boundary curve of each geometry to the nesting core, and also giving the whole geometry to the attributes → this means you will end up nesting the outer curve, and the whole geometry will be overlapped to that
wire 1 being dashed means it’s carrying a data tree
wire 2 being just thick means it’s carrying a unique List
they should both be data trees:
you might try with Split List with splitting index = 1 instead, but it’s a moonshot
this usually means you have a Null in your list of curves