With a BIP-compliant HD Pockets, you needn’t concern your self with the addresses and privkeys your self, every thing is deterministically generated out of your Seed Restoration course of.
So, first off, is your account-wallet’s 12-word mnemonic BIP39 compliant? Some wallet-clients like Electrum can use proprietary schemes.
Subsequent, did you make use of a BIP39 passphrase? That’s simply as a lot a part of Seed Restoration because the mnemonic.
Subsequent, did you persist with standards-based Derivation Paths in organising your node tree?
There are wallets utilizing unique derivation paths with BIP39, fully arbitrary personal/public key bushes.
So, it might be essential to know which wallet-client software program generated the account-wallet’s seed, possibly even which model. And which shopper you wish to restore your account-wallet to.
Additionally what cash / networks, script sort (SegWit?)
Hole limits might come into play as properly.
None of this implies your property should not stored protected on the blockchain, as long as you retain hour Seed Restoration secret, clearly by no means enter into any system able to connecting to the web.
Extra like, all these different components might forestall your new wallet-client from robotically “discovering” your property and displaying an accurate complete stability, with out your needing to provide it extra info.
Some wallet-clients solely assist a single Account / path per Seed pockets, others are multi-account.
https://github.com/bitcoin/bips/blob/grasp/bip-0044.mediawiki#Account_discovery