Browsing through the HIWG CD I came across a bitmap of the Yiklerzdanzh sector including routes, so I added those.
There's no distinction between Zhodani "xboat" routes and others... some were easy to interpret (the Meichntid Ibl and Talpaku Communality have obvious self contained networks) but the long chain of routes into the L and O subsectors is a bit odd. I'm interpreting the routes as a continuation of the Zhodani routes into unincorporated territory to bolster the Consulate's influence in the area. Oddly, it avoids the Consulate outcropping that seeps into the Vanguard Reaches.
If anyone has more data on this I'd be glad to clarify.