QB Issue Resolution:
Restoring from a backup
Each .dmg file QuickBooks creates when it backs up your data includes a copy of your company file and your Attached Documents Library (if you use and back up attachments).
Here’s how you use the .dmg to restore your company file:
Go to your backed up disk image and double-click it to mount it (open it).
Drag the company file (with the .qb2013 extension) where you want it to be.
If you use attachments and you have set up your backup preferences to back up the Attached Document Library, drag the Attached Documents Library folder where you want it to be.
Tip: We recommend that you put your Attached Documents Library in the same place as your company file.
Open your company file.
Go to QuickBooks > Preferences.
Click the Attached Documents Library menu and choose Select Existing.
Navigate to the Attached Documents Library folder you restored in Step 3 and choose it.
Close the Preferences window—your choice is saved automatically.
Resolution for Issue 'For some reason or another, Intuit decided to change the backup suffix from .qbb to .dmg. I cannot open the .dmg. How can I get the dmg. converted to .qbb?' available: Yes (Solved).
Source: Intuit Community forum.
For some reason or another, Intuit decided to change the backup suffix from .qbb to .dmg. I cannot open the .dmg. How can I get the dmg. converted to .qbb?: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.Support for Quickbooks/QBO
Quickbooks Repair Pro will resolve it efficiently and affordably. Guaranteed resolution of your issue, or you pay nothing!
Error Recovery for Quickbooks/QBO [Canada]
E-Tech is the #1 Quickbooks data migration and Conversion service provider.
Additional Support Options: