Merchant Archive

Ok, I am a Master Merchant and have the bulk of my vendors on Corellia. I do however have one vendor on Tatooine so suppliers can more easily drop there if it's easier. Lately when people drop on my Corellian vendors I go to the offer screen and look and I see it for a split second and it disappears. I cant even see the tatooine offered stuff. I have to go there and then the same disappearing act happens...as you merchants well know we are able to see cross galaxy all our vendors. Anyone else having this problem?