"Apply to all" option in keyboard shortcuts - does this only affect the newly input shortcuts?

[Intuos5]

Does the "apply to all" checkbox in the keyboard shortcuts affect only the keyboard shortcuts you add or does it also sync existing shortcuts? I am asking here, because I don't want to run into the issue that I need to backtrack all the shortcuts that I did make different between the various personas.

From the help file:

[R C-R]

Only to the shortcut you set. No syncing with any existing ones.

[Intuos5]

Great, good to know, thanks!