MT5 accounts.dat file deleted when installing Windows 10

 
When upgrading to Windows 10, after launching MT5 the first time, a message in the Journal tab says "Accounts: deleted due to security reason".  The old accounts.dat file exists in the \Program Files\Metatrader5\Config folder but when I copy it to the new location Windows 10 is using for MT5 config files, it resets it and gives the same message when I launch Windows 10.  I had a demo account running but did not record the account number, is there a way to get it back? 
 
Daniel Lewis:
When upgrading to Windows 10, after launching MT5 the first time, a message in the Journal tab says "Accounts: deleted due to security reason".  The old accounts.dat file exists in the \Program Files\Metatrader5\Config folder but it when I copy it to the new location Windows 10 is using for MT5, it resets it and gives the same message when I launch Windows 10.  I had a demo account running but did not record the account number, is there a way to get it back? 
I suggest contacting the service desk about this one Daniel....
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