99% of the details I have seen for vertical x-bracing shows one member continuous. I design a lot of connections for a steel fabricator and I am always required to perform a hand calc or 2 ram connection calcs with one being the horizontal X-brace...

Currently, there is no way to design a gusset base plate connection if the column base has braces coming into it from 2 different planes. You can't even assign 2 separate connections, one for each plane, like you can at CBB joints.