I'm adding my vote but from what I can see, this feature request is on the idea board since 2013...
This is a huge time waste for our company and shocking that this is not already a feature. All of our products are shipped as individual cases/packages causing a lot of manual labor to split out every single order into multiple packages and manually adding each weight and dimensions. It's clear we are not the only company struggling with this. This needs to be addressed and resolved
Please ! Add this features to your API Shipstation
We need this as well. Not sure why this hasn't been implemented yet.