With a BIP-compliant HD Pockets, you needn’t concern your self with the addresses and privkeys your self, every part 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 stick with standards-based Derivation Paths in organising your node tree?
There are wallets utilizing unique derivation paths with BIP39, utterly arbitrary personal/public key timber.
So, it could be essential to know which wallet-client software program generated the account-wallet’s seed, possibly even which model. And which consumer you need to restore your account-wallet to.
Additionally what cash / networks, script kind (SegWit?)
Hole limits could come into play as properly.
None of this implies your belongings are usually not saved protected on the blockchain, as long as you retain hour Seed Restoration secret, clearly by no means enter into any machine able to connecting to the web.
Extra like, all these different elements could forestall your new wallet-client from routinely “discovering” your belongings and displaying an accurate complete stability, with out your needing to present it extra info.
Some wallet-clients solely help a single Account / path per Seed pockets, others are multi-account.
https://github.com/bitcoin/bips/blob/grasp/bip-0044.mediawiki#Account_discovery