Agree with above comments, good to have found this site. I am planing a sleeper trip and went to check the Scotrail site, squinted at it, and realised it wasn’t me, the Bargain Berths link really had gone. Then delved deeper to find a supposed link to booking the BBs (not even a link any more in the front page narrative on BBs – they really don’t want us to find them!) and was deflated to find it linked to the hideous and unhelpful ‘mixing deck’, as do all the sleeper booking links now.
I echo Simon’s advice: contact Scotrail directly to air your views on this change, as I have. I fear that the mixing deck system might drive people on to the phone lines which will become overburdened.