Dynasty free agency glitch?

[:1]In my first dynasty I just finished with the jets and went into offseason. I had a few of my big guys leaving so I re-signed them. problem is once I went into the signing of free agents My main big guys I had just resigned were listed at free agents eventhough I resigned them before free agentsy? It accsepted my offer for resigneing then at the free agentsy screen I wasan't looking for players to fill there rolls and lost them. so why would the cpu list them in free agentcy if I had resigned them?|||No one knows why this happend or if its a glitch? I thought once someone signed you could not declare for free agency.