Seasonal titles?? wtf u doing

What the heck are you guys doing with titles??

I understand that arena titles are now removed on a seasonal basis, and refreshed based on rating of that current season - except r1 titles.

Now... I received arena titles in s5 and s6 on 4 different characters. One of those characters received a Rival title during s5 and then I did not play that char in s6 at all (not to even achieve a Challenger title). I log in s7 and it's still there.

My 3 alts that I casually played during s6 all got Challenger title, and they carried on into s7, yet one of them lost Challenger title about half way through, and the other 3 characters with remaining arena titles lost them yesterday arena flush (including the 2 season-old Rival title char). Make any sense? I think not.

Tldr - 4 chars, 1 kept title when it shouldn't have, 1 lost title a few weeks into season when it shouldn't have, and then the the other char 2 titles were randomly removed yesterday when it's not even the end of the arena season??