I think it would be extremely helpful to allow multiple customs declarations to be saved to a single SKU.
I have clients who sell bundles containing multiple individual products. ShipStation allows us to break these bundles down into their individual components for fulfillment, but we're having issues getting the customs information to carry over properly.
We already have the customs information set up for each individual product, so it would be great if ShipStation could pull that information from each component and automatically populate the correct declarations when a bundle is ordered.
Alternatively, allowing us to save multiple customs declarations directly to one SKU would solve this problem as well. This would be especially helpful for subscription boxes, gift sets, and other product bundles that ship internationally.
The goal is to reduce manual work, prevent customs errors, and make international fulfillment easier for everyone.