I'm afraid there is nothing preventing the DWP looking at the whole award again when they do an MR, it's unlikely that points already awarded will be removed, but it can and does happen so you need to consider the risk if you request one.
Two things to consider;
- the points you already have, 10 or 11 points provide a buffer where 8 or 9 may not. - how reasonable is a higher award? You don't say what you scored for Mobility and whether it was for one or both components?
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems