There's now an orders report that should help
Sarah, in today's code release there is a new orders report. You can find it in your dashboard, under store > reports.
There's a date range, and you can specify what order statuses you want to look at. By default it's payment received and completed orders. You can export the data to a CSV file, which should be helpful for you to get the data into your shipping app.
Hope this helps!
Orders Management
Would love a feature to export open orders in a csv format so they are more easily managed with shipping or other management software. It doens't look like there is an option besides copying and pasting each and every line from one screen to the next or into my shipping app. This has proven to be a big time hog during order fulfillment.