Hi @dweber12 ,
I think you’ve made it very difficult for yourself with all these (in my opinion) unncessary list levels. I’ve flattened the inputs to make it easier. Afterwards you can normalise it, such that the original structure is kept.
2024-01-14 Replace Sublists with other Sublists and keep structure.dyn (15.8 KB)
Let me know if this works for you 