Monte Carlo (MC) simulations produce evidence that annealed copolymers incorporating two interconverting monomers. P and H. adsorb as homopolymers with an effective adsorption energy per monomer. epsilon(eff), that depends oil the PH equilibrium constants in the bulk and at the surface. The crossover exponent, Phi is unmodified. The MC results on the overall PH ratio, the PH ratio at the surface and in the bulk. and the number of adsorbed monomers are in quantitative agreement with this hypothesis and the theoretically derived E,it. The evidence suggests that the form of surface potential does not affect Phi but does influence the PH equilibrium.