Ability to have multiple Fulfillments against one order sent to Big Commerce

We have a website on Big Commerce, the orders are transferred to Dear via the Dear-Big Commerce integration. We are not able to fill all orders completely.

Dear has the functionality to allow partial shipments of an order. This is great, but only the first fulfillment actually gets sent back to Big Commerce.

Can we get the integration updated so that all fulfillments against an order get sent back to Big Commerce?