One nice thing about upgrading your sprinkler controller, is that you can renumber your zones any way you choose! Just take note as to what wire operates which physical zone in your yard, then when transferring to the Rachio, put that wire into the zone# you want it to be. It may be helpful to write on each wire the location of the zone. For instance, "NW corner", "back lawn", etc.. Your physical valves do not care what number they are, or order they are placed in. In fact, it looks like a previous owner already changed the order to match their idea of how the sprinklers should be setup. You can also rename the zones from a # to something more descriptive in the Rachio app, so the numbering is really not too important.