The slaving bug cured. Currently, if channel A in actor P in model X is slaved to channel B in actor Q in model Y, when models are added or deleted on the stage, the slaved channel is liable to choose a new master for itself, namely a channel B in an actor Q in any other model on stage that has the same name as Y as defined in e.g. this text in the CR2:-

figure 
        {
        name    <i>name</i>