Hi Kittyroo
You will not need to migrate until you receive a letter from the DWP inviting you to apply.
As you are in the support group you will not need initially be required to complete a new WCA form, you should be placed straight in the LCWRA group, without needing to send in fit notes, you will at some stage be sent a review form. We would advise you to seek help from your local Welfare Rights Organisation;
advicelocal.uk Gary