Restoring most recent document at cold start in DocumentGroup iOS app?

I've tried everything I can to restore the most recent document at cold start in my DocumentGroup iOS app.

Q1. I believe it's not possible, but I would be happy to be proven wrong?

Q2. Why is this not possible?

My users who only edit one document find it quite annoying to have to select it so frequently.

Restoring most recent document at cold start in DocumentGroup iOS app?
 
 
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