I'm on the Nottingham (Kimberley) relay transmitter and we had DSO Step 1 yesterday too. I'm running the latest 4.03r7732 firmware. I did an update scan and got something like:
East midlands: 21 Services
East Midlands: 6 Services
I chose the 21 services one. Some of the channels gave "Service not available". The BBC services seemed in a right mess. The original ones were left alone, but now not working. New versions appeared in the 800 range and these were active. MrsA was not happy. So I ended up doing a full rescan. This put the right channels in the right places, but a number of them still gave the "Service not available message". Also none of the radio channels were working. Whilst in radio mode, did an update scan and this seemed to sort the radio channels. Went back to to TV mode and tried an update scan - no improvement on the non working channels. Did a manual scan on one of the specific muxes and this fixed it's channels. Tried another mux and it only resolved some of the channels. So I still don't get 5* for example. Didn't have enough time to investigate further so will look again tonight.
However, my ancient Digifusion FVRT200 rescanned and all channels are available and working. It managed to sort it out, but disappointingly the DS seems to be struggling. And there's another round of changes in a fortnight. Woo hoo.......!!
In comparison, channels come and go on Freesat and I don't have to do a thing. The Grundig (which is crappy in many respects) just presents the new channels or removes them, no interaction required (other than hiding new crud from the active channel list).