Use the below line to clear the existing unwanted properties.
Thanks for the reply. That does strip regular local formating, but it leaves character styles applied.
I guess I can do a separate step to apply [None] as a character style, but it seems like there should be a way that applying the para style would do it.
You can do almost everything with a script that ID has built-in, but some things are slower in JS. If you want to remove character styles, apply [None] to your paragraph, and then remove local overrides.