Re: Eclipse glitch with Sayn
The conversation triggers when you walk through the scanner/barrier thing near the elevator for the Docks Holding Area. Occasionally you can get a trigger to reset by leaving the area and doing something else; then return and (if you’re lucky) the trigger resets. Since you said that you tried everything I'm guessing that that did not work.
The only other thing that would fix it is to reload a prior save.
I say only because I'm sure editing the save game (PC only) is viable.