How come Power Rangers Mystic Force, Jungle Fury and RPM did not do a team-up like the rest?

Ninja Storm through S.P.D did a team-up with their previous seasons...I mean I would understand Ninja Storm did not do a team-up with Wild Force because Disney bought Power Rangers when Ninja Storm aired how come Mystic Force, Operation Overdrive, Jungle Fury and RPM did not team-up?