I'm going to place the .dat directly into the folder instead of trying to restore.
Take note that automatically loading a "
wallet.dat" file as default_wallet has these conditions:
if copied in the wallets folder, it will only be automatically loaded after a restart if there are no other wallets already loaded.
if copied in the datadir instead of wallets folder, it will only be automatically loaded after a restart if there are no other loaded wallets or "
wallets" folder isn't available.
The Restore option, on the other hand, restores it by creating its own folder (
wallet name) inside 'wallets' folder and loads it afterwards.
Either option still subject to the same chain check procedure and rescan once Bitcoin Core tries to load it.
So make sure that you have
walletcrosschain=1 in your config since it's initially detected as non-mainnet or altcoin wallet.dat.
You can even load it right now so you can see if there are transactions after syncing through year 2013 blocks.