S
First, you only mention your claim(s) so my response is based on you being a single person.
The Mobility component is not relevant to my answer, so even if it were to remain in payment it would not affect my answers below.
You will lose the "extra money because they are severely disabled" because the payment of this Premium is dependent on a Daily Living award.
The Disability Income Guarantee is paid for two reasons either of which can enable payment. you are receiving an Enhanced Daily Living award or you are in the ESA Support Group, you are still in the SG so this Premium remains in payment.
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems 
