Question about Stevie's management

[estranged4life]

I was reading about how Def Leppard has changed management after all these years with Q-Prime and found the very last sentence of interest:

"Def Leppard have been with Peter Mensch and Cliff Bernstein at Q Prime Management most of their career to date, but are set to sign with Trudy Green at HK (Howard Kaufman) Management. Industry source Hits Online broke this news today.

Green has worked with such names as AEROSMITH, POISON, MICHAEL JACKSON and SLASH.

Additionally HK management is now part of Irving Azoff's Frontline Management. "

My question is when did HK Management become acquired by Irving Azoff's Frontline Management? How will this impact Stevie, If at all?