Compilation no longer grouped on Iphone and iPad
Hello
I have a strange behaviour with my compilation albums that I can't resolve.
First of all, I would to like to note that I use iTunes match, on all my devices. I have iOS 8.3 on all my devices and didn't made any os update since at least one month (when 8.3 was published)
All my compilations were tagged correctly to be grouped, and they were grouped on iTunes, but also on my iPhone and iPad.
But 2 weeks ago, some songs of some compilation appeared alone on ipad and iPhone, but still grouped correctly in iTunes
And 2 days ago, all songs of all my compilation appear alone and are no longer grouped ion my iphone neither on my ipad, but they are still ok in iTunes.
On my daughter's iPod (iOS 8.3) which is not syncronized with iTunes match but manually synchronized, I still see compilations grouped
I tried to disable iTune match on my iphone, an activate it again after reboot, but it had no impact
On my mac, I see this
And on my IPhone, I see this
It strange also because for some of them, I can set whatever I want in Album Artist in iTunes, I still see the name of the Artist in Artist Album (here for example, it's the case for Jon Malkin, Taylor swift and Maroon 5) on my iphone and iPad. But the tags are correctly set on iTunes...
I've tried different things on my mac to tag the songs of my compilations, but without success.
Here are the settings I have on Itunes for this compilation. Hereunder, all songs are selected and the information are
Does someone has any idea why the behaviour suddenly changed on my iPad an iPhone? Is there a way to modify the song tags to have this fixed ?
Thanks for your help
iPhone 6 Plus, iOS 8.3