Accidentally deleting a file from you drive can be done any time. Whenever a user of articulate storyline make a new project in storyline, a respective temp file is made in temp folder on the computer. So a file is deleted accidentally from your computer and you want to recover it and you know the name of file, just follow the steps and recover your file.
1: Go to path “AppData\Roaming\Articulate\Storyline” on your drive where you have installed you Articulate Storyline.
Like on our system it is “C:\Users\360elearning\AppData\Roaming\Articulate\Storyline”
2: Copy the “.temp” file you want to recover and paste in your working folder.
3: Change the extension of copied file from “.temp” to “.story”.
4: open the storyline file and start working.