How to convert qb2011 to qbb file

qb2011 to qbb conversion seems to be related to QuickBooks. You can export .qb2011 files to .qbb files using the File  Backup to QuickBooks Windows function in QuickBooks for OS X (possibly only version 2011). Be careful when restoring older backups, as they might overwrite your existing data. Also keep in mind that it is not possible to use a newer version of the format in the previous version of the program, i.e. you cannot open .qbb file exported from .qb2012 in Quickbooks 2011 etc.

Open QB2011 file    Open QBB file

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QuickBooks for Mac

An OS X version of popular accounting software