Mechanim IK Problem

Hello,

I was using Mechanim with AnyPortrait animations without problem but today I had to remove one arm IK because run animation wasn't look good since arm corners looked bad when I turned it 90 degrees. I deleted the IK between the arms to make it manual.

Animation looks good on AnyPortrait (Baked). But Mechanim (in-game animation) looks weird.

AnyPortrait (Normal)

Ingame

It happened because I removed the IK on the arm. But why it didn't update itself I don't understand. It's already baked... Btw, I tried to add that IK again but it makes worse.

I need help. Thank you.