Quick question becasue wtf...

I found one of the rares on my server (Gorok) but since ive allready got the mount i decided to announce in Oque to be nice :)

so i was stood nexto it and next think i know i invite people and the mob dissapears infront of my eyes... :s it changed my server??? wtf why>? how do i avoid this in future if i want to announce for people???

that's a blizzard thing they haven't released to many details on.

there are two main situations that will shift the group:

the group will shift to the realm of the highest level (if you're 90 and invite a 100, you'll shift)

the group will shift to the realm with the highest number of members.