I had curated a just-right VIP list in Apple Mail with about 30 entries.
OS X 10.10 Yosemite destroyed that list—it’s gone, wiped out. As I seem to recall, OS X 10.9 Mavericks did the same thing.
MPG doesn’t know if this is a common problem.
Gary Q writes:
I also lost my VIP list. Just. Wonderful. I am also finding Mail to be hanging a lot and having to force-quit it very often. Never had issues like this before.
MPG: I suspect a general bug. I use the feature as designed; it ought to work across upgrades. I also have been seeing more Mail hangs that require force-quit.
Arne D writes :
This also happened to me, my VIP list disappeared. However, the 'stars' were still next to the names of mails from VIPs in the mail list. I Selected one of those mails and clicked the star twice (first un-VIP then VIP again). After this it showed the VIP list again, with the original VIPs still there.
MPG: MPG uses “classic layout” and no stars are visible in the mail list. Switching that layout style off, the stars show, but only for the new 2 or 3 now re-added / re-done. So the old list is apparently toast.