Just go with the following comment, which I missed:

darth_ender said:

You know, though it seems illogical to me, I'd rather play the game as close to the correct rules as possible, and nothing indicates that the zones disappear. Perhaps it won't be as big a deal as I thought. We shall see. But for now I'll say I'll go for keeping them.

My dad seems to be of the opinion that you should keep them, so you may as well, since your only disagreement comes from the guy who isn't affected by this...