maybe that's the case. They did say they would have accepted it for extending based on over 50 though. But the amount was to small per transfer. But being Danish (from Denmark) he could not get that notary letter. As mentioned they do make an alternative one now. And that was accepted.
From personal experience, better ask your local immigration office, unless you are going to one of the big ones that the admins on this page knows, if they will accept it this way or not, even though it is indeed allowed by the law/rules.
My father had his rejected with bank papers showing way past 40k a month for 12 months of international transfers.
A permanent residence is not a visa. If you get that, you will not need a visa anymore. That said, you should talk to your local immigration about applying for it.
Your re-entry permit kept your existing "permitted to stay" date alive. It does not extend it in any way. So if your previous stamp permitted you to stay until 20th November, that is still the date you are permitted to stay for. The IO clearly made a mistake, and you should have it corrected.
that's fair if you were informed about it when applying. I wasn't. I would have complied with it with no problem. And I will do. The thing is I took out 20k, but put them back 5 days later when they told me by chance. I have yet to see if they indeed will ask for the updated bank book. But if they do it's hardly fair when there was no information about having to keep the 400k even in the under consideration period given before it was actually too late.