Hi Susan
Welcome to the forum.
You might want to have a look at the following FAQ which explains where everything is;
www.benefitsandwork.co.uk/guides-for-claimants/faq/forum.
It should make no difference as WCA descriptors are different from PIP descriptors although a few descriptors do over lap. You may want to add a copy of your PIP decision when sending in supporting documents.
WCA is all about work, whereas PIP is all about how your condition affects you, see our guide;
help-for-claimants/esa1 There are two tests that you have to pass to be eligible to get LCWRA element, the first test is you have to get 15 points, the second test you have to fit with one of their descriptors see page 22 and 26 of the guide.
Gary