Just a sort of PSA-- i've been in touch with Shopify and yes, they suck on this issue and offer nothing of detail. I escalated somewhat far up the ladder and ultimately got something to the tune of "we know about the problem an nobody has chosen to f...

But these apps don't allow you to then use the special rates that Shopify has with for example UPS. So... a big loss.  Any other option? I don't understand how so many businesses on Shopify can put up with this...

Here's what I got after pushing them to give me a non-b*****t response. It was... another empty response. Alternatives to Shopify welcome, as soon as I have a day free I'm getting off. Can't believe they don't let you assign different boxes to differ...

Bumping this thread again, Shopify does anyone have info on whether this is a feature in progress? There seem to be literally hundreds of forum items about it.