// CORRECT: Specifying accountAddress preserves access to the existing account
const nexusAccount = await toNexusAccount({
  signer: eoaAccount,
  chainConfiguration: {
    chain: baseChain,
    transport: http(),
    version: getMEEVersion(MEEVersion.V2_2_3),
    accountAddress: "0xUserExistingAccountAddress" // CRITICAL!
  }
});

// INCORRECT: Without accountAddress, a new account is created
// This will result in loss of access to the existing account and its funds!
const newAccount = await toNexusAccount({
  signer: eoaAccount,
  chainConfiguration: {
    chain: baseChain,
    transport: http(),
    version: getMEEVersion(MEEVersion.V2_2_3)
  },
});