How NPP deletes files?

[Alexey Fomin]

Example
I create a new file - I write the text in it.
I can see new temp file it in folder AppData \ Roaming \ Notepad ++ \ backup.
Then I close it without saving - the file is deleted from the backup
but recovery programs (Recuva and others) do not see it in the backup folder.

This big problem for me because I cant restore my file.