If you are running a modern version of Bitcoin Core (v0.21 or later), you can migrate your old wallet.dat to the descriptor format: migratewallet (28.0.0 RPC) - Bitcoin Core
In recent updates, Bitcoin Core introduced Descriptor Wallets. Older versions used "Legacy Wallets." While Legacy Wallets are still supported, moving to a Descriptor Wallet offers better security and easier backups. To migrate an old wallet.dat to the new format: Ensure you are running Bitcoin Core v22.0 or higher. Use the migratewallet command in the RPC console. bitcoin core walletdat upd
cp ~/.bitcoin/wallet.dat ~/.bitcoin/wallet.dat.old If you are running a modern version of Bitcoin Core (v0