The restorewallet RPC restores and loads a wallet from backup.
restorewallet "wallet_name" "backup_file" ( load_on_startup )
*bitcoin-cli help restorewallet
restorewallet "wallet_name" "backup_file" ( load_on_startup ) Restore and loads a wallet from backup. Arguments: 1. wallet_name (string, required) The name that will be applied to the restored wallet 2. backup_file (string, required) The backup file that will be used to restore the wallet. 3. load_on_startup (boolean, optional) Save wallet name to persistent settings and load on startup. True to add wallet to startup list, false to remove, null to leave unchanged. Result: { (json object) "name" : "str", (string) The wallet name if restored successfully. "warning" : "str" (string) Warning message if wallet was not loaded cleanly. } Examples: > bitcoin-cli restorewallet "testwallet" "home\backups\backup-file.bak" > curl --user myusername --data-binary '{"jsonrpc": "1.0", "id": "curltest", "method": "restorewallet", "params": ["testwallet" "home\backups\backup-file.bak"]}' -H 'content-type: text/plain;' http://127.0.0.1:8332/ > bitcoin-cli -named restorewallet wallet_name=testwallet backup_file='home\backups\backup-file.bak"' load_on_startup=true > curl --user myusername --data-binary '{"jsonrpc": "1.0", "id": "curltest", "method": "restorewallet", "params": {"wallet_name":"testwallet","backup_file":"home\\backups\\backup-file.bak\"","load_on_startup":true}}' -H 'content-type: text/plain;' http://127.0.0.1:8332/