Hello David and Sean!
So unfortunately Azuqua is limited in its ability to perform actions on documents or download documents, but that does not mean it cannot be done! One way to do this is to use the SFTP connector and download a .txt file to a SFTP server, then you would be able to access the data from your server by specifying the correct path, from which you could upload that file to another connector.
The other option is if you use google suite products, at which point you can utilize the Docs and Drive connectors to create, write, and download a file then upload that file to Dropbox!
If you would like an example of either please let me know!