Question: SphericalY giving wrong output?

Hi All,

Recently I upgraded to Maple 14 from Maple 13, and I've encountered a strange behavior in Maple 14 that doesn't appear in Maple 13. By the definition of Spherical harmonic functions in Maple,  

SphericalY(2*l, -2*l, theta, phi) = SphericalY(2*l, 2*l, theta, phi).

And this is true in Maple 13, however not Maple 14. Can you reproduce this behavior in Maple 14? Or have I done something else that might be causing this?

Thank you for any help you can provide.

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