I can confirm that BIAB did not ask for the feel change when changing to ZZBOSSA.

I still am not following what the problem is. If you let the melody play, it sounds the same regardless of the feel. I really believe the swing/even feel is there to allow for easy note entry. In fact, a true swing feel cannot be accurately notated. I know classically trained musicians that, if you give them a swing piece notated as BIAB does, they get the rhythm slightly wrong because they are performing it as written.

If the prompt is your concern, I suspect it intentional if PG did away it. I always found it to be a nuisance preferring to manually change the feel to the desired option when needing a lead sheet.