How to revert the original data tree after flatten it?

Grasshopper
1

Hi…
I’m confuse with this for a long time.
Pls have a look at the below pics.
Thank you!

01
011280×720 119 KB

02
021280×720 106 KB

Canvas at 10;03;08
Canvas at 10;03;081221×234 45.5 KB

2

You can try Unflatten. Run the tree and the list into the component

3

cool, it works!
Thank you!