Has anyone ever worked with the built in (somewhat Beta) functionality for MultiDistributor order splitting? It only works for UPS out of the box.
But:
#1 I need it to work with FedEX.
#2 I need it to work with FedEX LTL depending on if an item from that distributor has a DB flag set. (this I can do after I get it working with FedEx in general.

Anyone ever work with that functionality before?

It's in the Core project
iShoppingCart.cs
line 7619 where it begins.
There's a conditional that checks an appconfig (RTShipping.MultiDistributorCalculation) and does it's splitting afterward.

Hard to step into and find out where it's actually calling UPS.. that'd be the place to divert it to FedEx I assume...

Please help.

(This is a nightmare...especially with no phone support and no customization support, free or paid for..)