Hi Mridgeway,
Unfortunately, I cannot find any Saint Maur that is a suburb of Paris. The closest
Saunt Maur is in Picardie region, about 2 hours by car from Paris. This is entirely a different city that has no relation to Paris itself. The Ile-de-France region contains all of the suburbs of Paris. Anything beyond this is not covered by any RATP passes/tickets and you'll have to purchase individual SNCF train tickets for making these trips.
Best regards,
Ben