Filter Invoices From Exporting to Shopify

Hello!

I’m trying to prevent Invoices from exporting as Shipments to fulfill non-stock items sold on Shopify. My client sells hundreds of non-stock items a day which we need to import into Acumatica for accounting purposes only. After these orders are imported into Acumatica, the SO is completed, and an invoice is created. The Connector tried to sync this Invoice to Shopify to complete the order, but we do not need it to do this. I have not been able to successfully setup a filter to prevent this from happening. This is also creating a huge clutter of failed sync records and “processed” shipment/Invoices in the clients sync history screen. Any ideas on how I can stop this from happening? 

Thanks!