Copy and paste several cells to an override row and undo with Ctrl + Z

Jastrca

When I use Classic Anaplan I am able to copy a given number of cells and paste into an override row and then if I no longer want those values in the override row and before I complete any other actions I am able to ctrl+z and the cells will revert back to the old value. I am unable to preform this task in the new UX. 

adamsjk

We are having this issue also; this is extremely cumbersome when adding using copy/paste for an entire row and data, and you cannot simply use the Undo feature.  

Kavadera

The problem is also with deletion. Even if you delete value in only one cell, that is also not an undoable operation in New UX

Personally I think this is critical issue, rather a bug