If you are unable to find an invoice or customer on Chargezoom or Quickbooks, please verify the following
Resync from the Merchant portal
Integrations | Accounting Package > View Log
You can click the ReSync buttons to try and resync the invoice or customer
If there is no Red Re-sync button and just states Not Synced, check the web connector.
Resync from the QB Web Connector
Open QB web connector on your desktop > check the box on the left-hand side of the Payportal application ? click Update Selected