[grammatim[_2_]]

On Jan 29, 9:12*pm, "
wrote:
I'm surprised because normally when I delete insertions made after I
turned track changes on they just go away as if they'd never been
inserted.

That's when they're still just insertions waiting to be accepted. If
you select underlined inserted text, you should be able to delete it
with the delete key or by typing over it.