ok so i was at a market and i rezzed a nest for sale,,

so anyway i returned later to check and no nest.. and some of the other nests i had changed the prices on them,, and they wer asll back to the privious price,,,anyway i figured the sim had rolled back? only explanation i could think of,, maybe they restarted it or somthing i dont know the details of such occurences,,
anyway if so,, i must have rezzed said nest just before the event whatever nature it took... so my nest was gone,, so anyway,, malvey replaced it with a live,, anyway,, now im thinking what happens if this is the case and someone buys a nest and the sim does this or whatever it did or happened,, its possable the sold nest could be back? then another person comes along and buys the same said nest..... then when the two buyers coax their nests one of them could get the ,,this is duplicate nest,,and the seller might get blamed for selling duplicates etc,, so,, anyway,, this hasent happend to me but i was just thinking if this is so or possable,, and anyway.. just wondering,,is it a known or unkown issue or am i totaly on the wrng track,, sorry,, anyway was just a thought anyway