Currently, Storenvy products are only "loaded" into ShippingEasy's products upon the initial sync, but not as orders continue to sync. It is really needed to have products continue to sync as orders come in with items that are not in the ShippingEast products database.
This is really important since Storenvy doesn't support product weights. I update the weights in the ShippingEasy products, but it's a royal pain to have to manually (even via a CSV) to keep ShippingEasy's product database up to date.
Please add automatic/continuous product sync with Storenvy.