miners and traders L class are not joined with the station (X4: Foundations)

Rebuilt station plot for different commodities, the resources which are in the sector. The only thing not built a Dock in the form of healthy cross did not understand why he, after all, are joined to the base and others. Attributed to ships, including traders, L-class cargo drones. Everything was fine until I built a dock maintenance of ships L (for some reason in the category of construction and not Doc, I guess), stuck it to the solar battery. After some time began to appear the message that avtodorovtsy and autominer L can't carry out the order. It turned out they fly around the station, which is like a Daisy surrounded by icons of the trade, fly to dock, fly past and give this message. Set up more modules dock - did not help, and Doc-cross somehow doesn't want to stick to an existing design (maybe it is not needed, and is not the case?). Tried to put the cross aside and pave the tunnel to the existing structure, fussed for a long time and did not work.
How to fix what is missing or unnecessary? I would not want to destroy the space station modules or to change ships L on M...