What will occur to the Registry after executing *.REG files or after using the function of direct Registry changing - Undo/Redo into Registry!?
Undo modifies the Registry key, including its subkeys, for which comparison was done. This key becomes absolutely similar to the key from Old copy of the Registry.
Undo modifies the Registry in the following ways:
- removes from the Registry keys marked with yellow bulb 
as well as values in the green bulb 
marked keys on the Added tab
- adds keys and values marked on the Deleted tab to the Registry
- changes data "2" to data "1" in values on the Distinction in Data tab.
Redo modifies the Registry in the following ways:
- adds marked keys and values in the marked keys on the Added tab to the Registry
- removes marked keys and values on the Deleted tab from the Registry
- changes data "1" to data "2" in values on the Distinction in Data tab.