Hello, @saraf R.
Let me explain to you some information about the QBM format and help walk you through the steps on how to restore your data in your account.
You can restore the data in QBM format if you're using QuickBooks Desktop. But if you don't have, you can utilize our trial version. Before doing that, make sure your computer meets minimum requirements, so you're able to download QuickBooks without any problem.
Here's how to download the trial version:
Once done, you can restore the data by following the steps below.
For more information about the process, check out this article: Create and open portable company files in QuickBooks Desktop.
After that, you're now able to move the data into your QuickBooks Online. Please note that not all of your lists and reports will be converted to your QBO because of feature differences. Also, ensure that the company file isn’t too big to export.
Here's how to move the file to QBO:
You can run a profit and loss report, then set as an accrual basis for both QBDt and QBO to make sure your books match. For QBDT Enterprise, visit this article for the detailed steps: Move your QuickBooks Desktop file to QuickBooks Online.
Browse through these articles below to know the tips & tricks, fix errors in converting and opening files.
Additionally, check out our help articles page. This page contains a lot of information that helps your future tasks.
Let me know if you have follow-up questions. I always here to help.