Can I restore a company into my QBO account but from a tlg file belonging to a QBD company?

Hello there, @fernando-abadie-.

I'm glad to be your QuickBooks guide today. 

To convert your data, I recommend creating a backup copy of your old version of QBDT and then converting it to the latest version. 

Once done, you can import your file to QBO. Let me guide you how:

1. Download and install a trial version of the latest QuickBooks Desktop.
2. On the software, go to the File menu, then select Open or Restore Company.
3. Click Restore a backup copy.
4. Find and open the backup copy of your data.
5. Select Open, then click Save.

After that, go to the File menu and select Copy Company File for QuickBooks Online under Utilities. 

For further details about this process, refer to this article: Move your QuickBooks Desktop file to QuickBooks Online.

Here's another link for your reference on handling the situation in case you run into some errors when converting your company data.

Get back to us at any time if you have additional concerns. Take care!

@fernando-abadie- 

TLG is not a data file. Find any file of *.QBW, *.QBB, *.QBM or *.ADR.

Thank you for your reply however that's the problem. All files were deleted on purpose and all was left was a tlg file.

Try opening the recycle bin

What recycle bin? If you are referring to the computer's recycling bin there is no chance. EVERYTHING was deleted. This is a case of sabotage so will not get anything else. 

Hi there, @fernando-abadie-. Let me share additional information about how the TLG file works.

The Transactions Log (TLG) file contains all the changes you've made to your company file. You can utilize it with the Auto Data Recovery (ADR) version of your company file to recover your recent transactions.

If you no longer have any of the file types mentioned by Fiat Lux - ASIA, you'll have to start QuickBooks Online (QBO) from scratch. Not to worry, we'll be right here to help you through the process. You can also check out this guide: Get started with QBO. 

Let me know in the comments if you need further assistance, @fernando-abadie-. I'll be glad to help. Have a nice day.