To get Old Orders imported into the app you will have to Create a Hunt using the Include Old Orders feature, you can follow through easy steps below:
1. Click on Create New button from the upper right corner of the App page.
2. A Dialog box appears, you will have to select A New Hunt
3. Fill in the necessary details of your Hunt, and scroll down to Delivery Settings section, and click on Add Past Date for Old Orders
4.1 Set your desired number of days to include for Old Orders
4.2 After setting the number of days, you will see the change under Delivery Settings and you can modify this whenever necessary.
5. Complete all other required details for your hunt, Continue and Review, and when all is set you can click Activate & Start Hunt