My charizard vanished with a squirtle in it's place

[Red_Berry_ninja]

I had a lvl 43 Charizard sitting in the second place of my team when i left the server.
But hours later i come back and i find a lvl 12 squirtle in it's place.
 
Is any able to help me find the cause of this problem

[Tenebrae]

The cause is Pixelmon. Nothing we can do about it. Live with the bugs, die with the bugs.