Sales Orders through BC Connector stuck due to State Error

We use an address validation tool in BigCommerce to validate addresses prior to them being imported through the BC Compactor into Acumatica. Recently we started receiving errors like the following:

The AU country does not have a state with the name 'VI'. Make sure that you have specified the state according to the 3166-1 alpha-2 standard.

We have set up the two-character codes for state, in this case “VI” for Victoria, Australia in the Countries/States screen in the entry for Australia. Yet we still get the error. 

We only recently implemented this address validation tool. Prior to that we did not validate and accepted three-character states for AU. 

Any thoughts on what we can do to get these orders through the connector?

Thanks

Patrick