Automatically adjust the weight when splitting/combining orders

In my experience, the weight will auto adjust in both cases, IF the product weights are defined in shipstation (rather than getting this from store) AND the weight has not been user-adjusted since the order was imported--especially take note of automation and presets that assign a weight as this seems to count as user-adjusted. 


This does not work for splitting shipments where the items are not actually split, such as a single large item being shipped in two boxes (eg one shipment of 1 item, a second shipment of 0 items)