YOU DIDN'T DELETE NEVICA DID YOU
I don't usually do this, but a few characters in particular--mostly my hyena characters--I do once in a while. In fact, for one of my main characters, I even drew a little thing showing her design changes.
Some character's designs I change after a year or so, when I realize I don't like the design. Or in most cases, the character was made a while ago and it's design showed my... noobness. Like my hyena character, Msonge, who had lots of black markings that really didn't look good to me, and I changed him. But, then other characters I've almost never changed, like Turtle.