It seems to be that the preview window will show the BAM on the active cue whilst the BAM dialogue box is open. Once you close the BAM dialogue box the BAM disappears from the preview window. Don't have my projector connected here so cannot confirm what happens to the laser output. I would assume that the BAM is correctly implemented when using 'live' output.
Quote: "There is a theory which states that if ever, for any reason, anyone discovers what exactly the Universe is for and why it is here it will instantly disappear and be replaced by something even more bizarre and inexplicable. There is another that states that this has already happened.”... Douglas Adams 1952 - 2001