When moving from wallet.avax.network to Core (extension or mobile), some users may not see their staking activity. To access the correct set of P-Chain addresses that contain the staking activity users must access Core the same way they accessed wallet.avax.network when the AVAX was staked.
Recovery phrases, keystore files, and private keys all provide different X and P-Chain addresses (even though the C-Chain address is the same for all 3). Users must use the "login method" they used to access wallet.avax.network but with Core.
So if you logged in wallet.avax.network using the private key and staked AVAX, it will not be shown in Core if you log in with the recovery phrase. You'd have to import the private key instead (into Core) to see that stake.
NOTE: If you used Private keys or Keystore files in wallet.avax.network, you should import those accounts to access them.
For any additional questions, please view our other knowledge base articles or contact a support team member via the chat button. Examples are for illustrative purposes only.