There is no “transfer files” function within SmartOffice.
However, if you used iTunes to sync with your “old” iPad, there is a function within iTunes which will allow you to see all the locally stored files on your device and copy them in one step to your computer. Then, after you set up your “new” iPad you can transfer them from computer to device.
I would also suggest that you never store important documents in only one place. Backups are important. If you successfully transfer the documents to your computer, you could also use a cloud storage location to assist in your transfer of documents from computer to new device.
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