Did I say something incorrect? (I noticed downvotes.) I was trying to say that Bitcoin doesn't handle "merge". If 2 chains diverge at some point for whatever r

Did I say something incorrect? (I noticed downvotes.) I was trying to say that Bitcoin doesn't handle "merge". If 2 chains diverge at some point for whatever reason (in this case a firewall) then the nodes have the incentive to only keep the longest and discard the other one. Therefore when the firewall disappears, all nodes will continue on the primary chain, with the effect of "discarding" all transactions that happened inside the firewall. And the amount of BTC in the op's wallet would be "reset" at the value it had before the firewall.