The Fairey Fulmar in a war delayed to 1949

Without war until 1949, would the Fairey Fulmar shift from fighter duties to carrier reconnaissance?

Yes; newer fighters would push it toward reconnaissance, strike escort, and anti-submarine duties.

A later war gives more advanced fighters time to displace the Fulmar from its original air-combat role. Its range, crew arrangement, and carrier suitability would still support reconnaissance and escort work. Strike support and anti-submarine warfare are also plausible second-line missions.