You can easily export your tracking numbers for past shipments by running a Shipping Report.
Navigate to REPORTS page from anywhere in the ShippingEasy app.
From there, you can run your report by following these steps.
Once you download your Shipping Report, the shipment information will show on the spreadsheet. This will contain the tracking number if included for your shipment type.
This will cause the numbers to truncate. To change this, change the column format from "General" or "Number" to "Text".