Thanks for the quick replies. To let you know "relationship" between my race and the others, here's a chart of sorts, comparing the three saved turns I mentioned above.
Turn Number Race Relationship my side Trade list other side Trade list
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614 Drengin Furious (at war) all visible all visible
614 Altarian Close all visible all visible
614 Iridium Close all visible all visible
614 Iconian Close all visible all visible
614 Yor Furious (not at war) all visible all visible
614 6 minors all Close all visible As exelsis states -- only one colony - does not show; two colonies - both show
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634 Drengin defeated so no longer there.
634 Altarian Close all visible all visible
634 Iridium Close all visible all visible
634 Iconian Close all visible all visible
634 Yor Cool all visible only Credits item
634 6 minors all Close only Credits all visible
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640 Altarian Close only Credits all visible
640 Iridium Close only Credits all visible
640 Iconian Close only Credits all visible
640 Yor Cordial only Credits only Credits
640 7 minors all Close only Credits all visible
So, what is available for trade at turn 614, doesn't seem to be affected by relationship -- Furious (at war or not) or Close, all is visible. As well, at turn 634, I am close to the minors but I can't give them anything but credits, whether as a one-time gift or paid out over weekly. Then, at turn 640, Close and Cordial don't help make my items visible for trade. Must be a bug!
Any more advice?