I don't know if this helps, but there was also a period in 1988-89 where 94Q was called "Atlanta's Hit Music 94Q," and it had a format very similar to Power 99. Jan Jeffries was PD, and he banished Jazz Flavours back to Sunday nights 7-midnight.
This format ended by July 1989, and the station was then known simply as "Atlanta's 94Q," and it was on both AM and FM.
I remember when Jeffries "killed" Jazz Flavors back to Sunday nights only. IIRC Jazz Flavors dated back to the late 70's, 1977/1978 comes to mind, and it originally was only on Sunday nights from 7P-12A.
My best friend from my old neighborhood's dad got me into jazz back in the early 80s by listening to Jazz Flavors. This was in 1983-1984, and it was on 7 nights a week. He also had a poster in his room of a trombone turned upside down with an ice cream scoop in it that read:
JAZZ FLAVORS...SUNDAES ON ATLANTA'S 94-Q
It was given to him at a jazz festival in 1979/1980.
(I would give anything for one of these!)
So this would put the origin of this program to the late 70s.
Interestingly enough, I called Jan Jeffries when I was in the 8th grade when 94-Q canned the program before they flipped formats that fall (and I started high school). He explained to me that "it is a case of audience erosion. Two totally different kinds of music that conflict with each other. you see, people tune in to hear modern hit music at night and go what is this, and tune out. Once you lose a listener they are gone. Conversely, the jazz listener tunes in during the day to hear rock and then tunes out."
He cited this as a reason for their lag in ratings and basically pinned the failure of 94-Q "The Music FM" on Jazz Flavors causing audience erosion (his words not mine). He also said "some big changes are coming" (eluded to what would happen that fall with the birth of Star 94 and the death of 94Q).