Wallet location

[operationalguy]

Where does Tari Universe keeps wallets (private key, public key and so on)on Linux system?
I need to use 5 different Tari wallets, and I tried to save than delete ~/.config/com.tari.universe/mainnet/wallet_config.json to create new wallets. But after swapping back old wallet_config.json, I can't use other wallets, the balance shown is wrong, can't create a transaction despite wallet address is of another wallet.
If I've done it wrong, what is the right way to do that, and can I recover my wallets from wallet_config.json ? Where the wallet information is held ?