When applying for re-issue of a UK Part-FCL licence, you should advise the CAA of all qualifications which were on your pre-SOLI'd UK-issued licence.
There have been some re-issued licences which haven't included IR(R) privileges, for example. Presumably because SSC merely copied all the entries on the foreign-issued Part-FCL licence. I suspect the same is probably true for FCL.945 privileges.