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Rescan in pruned mode #85
Electrum Personal Server works with Core's pruned mode, but that disables rescans. That means people who have a pruned full node and a wallet with historical transactions cannot easily adopt EPS.
I actually managed it in 2016 on JoinMarket which works the same way as EPS: JoinMarket-Org/joinmarket#431 (comment)
It is totally possible to have Core download blocks needed for rescanning while still keeping pruned enabled. One of these days I'll try to put some time into figuring out exactly how and writing a guide on it.
Yep it should do.
Transactions and metadata (e.g. block hash which contains that tx) are saved in the wallet.dat file.