well, did it now; but though i had to be a bit tricky;
i had to start game in open sp mod so be abel to buy a better ship (still very basis, "defender" , but better than the old ones); save game, then restart in sp mode to follow campaign again
not sure if thats the way its meant to be ? i noticed that when starting open sp, all items (loot, weapons, trader stuff; but locations, station etc. as well) are not namend but called als same "ICD" or sth ?!
F.e. is there only "unknown space station, n.y. system" instead of "fort bush, n.y. system" etc. etc.....which makes it harder to plan trade routes etc.....