Absolutely not.
As long is the transfer mode for your GMAWP is spray. (Or more accurately, not short circuiting transfer)
If Johnny is qualified for spray transfer GMAW, he is also qualified for GMAWP in the same thicknesses, positions and joints as the original performance qual.
That does not mean that wise production management and process control would not integrate training that includes some type of performance testing to be sure you have your process under control after the change from GMAW to GMAWP.