Should be a simple way to create a return for a multi-package shipment that includes, you guessed it, multiple packages in the returns. Without having to split the shipment and do all that.
We are not using ShipStation because of this. We are a rental business that will always have our goods returned. This is the only piece of functionality missing and it's keeping us from using the product. We are currently using UPS Worldship because it easily allows for the multi-package returns. REALLY wish ShipStation would implement this with UPS so we can move to the platform.