Great idea, I'll try. I'm new to this...and I'm OLD so please don't get frustrated with me if I mess up, lol!
Nope. I "captured" it, saved it to my desktop and tried to "choose" it, but it said this type of file wasn't allowed. That's the only way I could think of to try doing it. Sorry!
The warning is just a dropdown at the top of the document that says "some warnings occurred, would you like to review them now?" then in smaller print it says "you can review warnings at any time by choosing View > Show Document Warnings." My only options are "don't review" or "review". Can't find anything helpful under Pages Preferences, either, so I don't think it's possible.
Thanks for trying 🙂