Spent some time this morning and put together the complete shell for an ABF shipping gateway in AbleCommerce Gold.    It’s only purpose is to provide tracking URL support for ABF shipments when marking orders as shipped.
It was interesting how Able has implemented a default provider interface, leveraged embedded resources and connected it all to specific configure and register pages in the admin.  I’ve worked on various shipping gateway pieces several times, but never a brand new AbleCommerce Gold gateway implementation.   Kinda slick how they did it.
I have to see if ABF will approve my request for an account.  It’s needed to access their API.   If I can get API access, I can build a fully functional gateway.
Now that the learning curve is over, it will be far easier for me to build new shipping gateways in AbleCommerce Gold.