metadata removal

An attorney in our office asked me to tell him the best way to remove
metadata from a document. Although we have a "metadata washer" program on
the system (used mostly after track changes), I told him that I thought it
was better to "paste special" the document as unformatted text.

I've worried a little about that answer since then, so I thought I'd ask you
if what I told him was reasonable.

What would your answer have been?

And thanks for being there during the countless times I've needed you!