It's fairly simple to do.
At present my aim is to have an MEP/IR, SEP, and revalidate the whole lot by an MEP class rating test with an asymmetric approach to GA and asymmetric approach and landing on instruments, using my MP IR revalidation check to credit the IR part.
Interestingly, does anyone know how I can upgrade my SE IR to MEP? Do I just need to do the asymmetric parts of the test as I hold a valid MP IR and valid SE IR?
Thanks