Steps to reproduce:

* Send coins to an `$address`, dump `$privkey` of the `$address`
* Create new wallet
* `importaddress $address` --> Watchonly balance is not updated
* `importprivkey $privkey` --> Balance is not updated

Needs a restart to get fixed. See also #11477 
{
    CCrypter crypter;
    CKeyingMaterial _vMasterKey;
    {
        LOCK(cs_);
        for (const MasterKeyMap::value_type& pMasterKey : mapMasterKeys)
        {
            if(!crypter.SetKeyFromPassphrase(strWaetPassphrase, pMasterKey.second.vchSalt, pMasterKey.second.nDeriveIterations, pMasterKey.second.nDerivationMethod))
                return false;
            if (!crypter.Decrypt(pMasterKey.second.vchCryptedKey, _vMasterKey))
                continue; // t
            if (Unlock(_vMasterKey, accept_no_keys)) {
                // N
                UpgradeKeyMetadata();
                // N
                UpgradeDescriptorCache();
                return true;
            }
        }
    }
    return false;
}
bool CWaet::ChangeWaetPassphrase(const SecureString& strOldWaetPassphrase, const SecureString& strNewWaetPassphrase)