Peter: The problem you may have after that is that it will keep resetting to two way. This is the default position and resets because the battery connections in the Beolink 5000 tend to go loose. One of the reasons I found the Beolink 5000 one of the most annoying remotes to use!
How common is this? It has never happened with my BL5000s (I've got three of them). They have lots of other problems though (one has display problems, another one doesn't work in two way mode...) :-) :-(