HarleyM wrote:
In my experience, there is no need to dissolve the alliance. However, nobody should ever leave or join an alliance unless all members are in the same zone (including the member leaving or joining). This goes for all zones - not just dynamis. Additionally, someone outside the alliance pulling threat on an alliance mob can crash the zone.
I think we do it that way because there is a chance - however slight - of bugs happening when crossing zones. And someone inevitably DCs or something on the way in. Teeny bit more work, but the resulting smooth entrance is worth it.