Basically yes,
When you do your LPC not OPC (OPC does not revalidate type or IR) assuming that you have done 3 IFR departures and arrivals on the type/class then your SPA ME/IR can be revalidated as far as your validity period on your MP IR. the credit is for section 3b, now what I think you need to do is the 3 IFR departures under single pilot ops in order for it to count as revalidation requirement for SPA IR. The other issue is you still need to fly section 6 for a MEP IR which is pretty much an IR LPC anyway so the credit isn't that useful imo.