Reliable Packets During Connection Failure

During a test session, a client temporarily lost connection to the game server. The connection seemed to have recovered, but the game had gone out of sync. The only way this could have happened is if packets were dropped or both clients thought they were the master for any period of time.

In the event of temporary connection failure, are reliable packets dropped?

What happens if a master client temporarily loses connection? Does the server attempt to change the master client in this case?