Idols changing groups?

I know it's not that uncommon for idols to redebut into a new group after their previous one disbands, but are there any cases of idols that left their group and joined another one while their previous one was still active? Leaving before the actual debut doesn't count.

I tried to think of some, but nothing came to my mind.

Quote from peachyjoon

hyuna left wonder girls and debuted in 4minute while wonder girls was still active

Oh right! How could I forget Hyuna?

Quote from bartkun

if IZ*ONE won't continue in full squad then we will have this with Yena moving to Everglow

and potential Wonyoung & Yujin to new Starship GG

But that wouldn't really be a case of changing groups while they're both active.