It possibly is alrdy fixed on 1.4, that bug I found out by accident on the last game, a research resource was right on the path of a trade route, and when I sent the contructor there, another new contructor named "Mining Contructor" appeared, and I just moved it and planted the starbase somewhere else, the resource was still on the ORIGINAL spot, BUT the Starbase, wich is the important part, was on another place. kinda goofy bug
Some1 did something similar to this a long time ago with another technique on previous patches, but to have moving Economic Starbases instead, where the guy would send a contructor to build the SB and when it got there by chance it ALSO was ontop of a trade route, then he upgraded the contructor to some other ship, but repented and didnt wait till next turn for updated ship and just built the Starbase, then he "accidentally" did a right click and the starbase moved somewhere else. That was pretty kool exploit since you could keep the trade route at peak efficiency by having the Economic SB following the mini-freighter.
Havent downloaded 1.4 cuz im still playin a game on 1.31, so I wont find out for a while...
Ask Kyro if he knows anything about it, maybe he knows when it'll be fixed or something.
Monc34