This is the relevant reference from the Books where Possession is mentioned.
It is not meant to be anything other than the facts of the matter.
Arrive at your own conclusions.
I wish you well,
"I was her master," I said. "It has been a long time. By now she may have fallen to another. Lapses have occurred. Who knows what collar is now on her neck. She may be a camp slave, a paga girl, a field slave, a caged brothel slut. Others may now have as much claim on her as I." Possession, particularly after a lengthy interval, is often regarded as decisive, by praetors, archons, magistrates, scribes of the law, and such. What is of most importance to the law is not so much that a particular individual owns a slave as that she is owned by someone, that she is absolutely and perfectly owned. It is the same with a kaiila, a verr, a tarsk, and such.
Swordsmen of Gor Book 29 Page 452