I'm not the RCMP's FRT group, but I'd say that likely it's irrelevant. Using the Stock II / Stock II Optic as an example (because I have them on hand) - if you take all the information required for the FRT - Markings measurements, etc.
There's nothing that would identify the Optic from the Iron sight version. The Stock II Optic just says "Stock II" on the slide. It's sort of like the fact that the FRT isn't concerned about the finish - Chrome, Blue, etc.
The FRT folks might add it into the "AKA" list for the FRT. Optic or OR is really just an option on the same gun rather than a different model in their definition of model.