You can actually try using "Cloudbacko home" for taking backup of Dropbox. CloudBacko home supports backup of data to Dropbox. I am basically using this software from long time and really satisfied using this software. Leavin a link just check: http://www.cloudbacko.com/free-backup.jsp

Ability to set connection strings based on deployment configuration would be extremely useful as well.

with backup option "no data for federated tables"