Creating a history of orders and payments for development and testing

To develop and test our application, we need a Test Merchant with a history (eg, orders for the last 90 days). Every order I have created using the API thus far sets the time to the present. I tried orders, atomic_order, and update order API endpoints. The time parameters (createdTime, clientCreatedTime) listed in the "body params" section of the documentation; however, they are read-only fields. As noted in the documentation: "Valid fields are: taxRemoved, note, title, state, testMode, manualTransaction, groupLineItems, and orderType."

It appears there is no way to set the time of an order. Has anyone else wanted a test merchant with a history? How have you dealt with this?

Thanks.