..... except the capx files or backup.
1/ .... looks like you misplaced it, unless you use SHIFT + DEL (as i do), else those recovery apps would have found something.
2/ take a look in to folder C:\Users\XXXXX\AppData\Local\Temp\ ..... where XXXXX stands for you username. Look in there for folders that start with 'cap'. If you recently exported it, i could be still in there.