When I changed my name a week before this happened it was working fine so I expected to play normally.

But when I logged on I instantly crashed, when I re-logged all of my multiplayer servers have just disappeared.

Sadly I have no idea why or how this happened but i will guess.
1. Change I.G.N
2. Wait about a week to play for the second time
Yes I know that this is not very helpful but I want to warn people about this happening.