Servers are periodically merged in order to ensure they remain as healthy as possible for the longest period of time. Having more players in a server leads to stronger crews, greater cooperation, and even better competition.
When merging servers, we carefully evaluate potential candidates and do our best to merge realms of similar size, age, and progression so that no one will be at an unfair disadvantage. Players shouldn't feel an imbalance as we do our best to review our data critically to ensure a fair experience for everyone involved in the merge!