Grasshopper_Toolkit: Flatten disappears in copy pasting components

[IsakNaslundBh]

Description:

Found a bug where the flatten disappears from the push component after copy paste. Marking as critical as this can impact save and open as well, as they are using the same systems:

Steps to reproduce:

Copy paste a push component. Note that this only happens if you have something plugged in to the push. If left empty, the flatten stays.

Expected behaviour:

For any flatten/graft/similar to stay on the component after copy paste and save and re-open.

Test file(s):

Can not provide one as the problem affects the save and open system