When generating your first order within Breww, you will find that this will automatically show as order 1. However, if you want to continue your existing sequence of order numbers from before using Breww, you can change the starting number.
As you raise your first draft order, you will see a pencil on the top left of the order page. Clicking this enables you to edit the order number. You will only need to do this once, as whatever number you put in here, Breww will numerically continue to increase by one for any future orders.