Intellij IDEA Cannot Undo

Question

I am working on a project at Intellij IDEA. I moved refactored some packages. However I want to undo my changes. When I click revert button it says

Cannot Undo

and shows a list under that:

Following files affected by this action have been already changed

How can I revert my changes because I lost some packages and classes. Does Intellij IDEA keeps them inside a temporary folder?

PS: I use open jdk 1.6.0 on a 64 bit Ubuntu computer.

Answer 1

IntelliJ IDEA has a great feature called as local history. I could revert my changes. There is a video gives a detailed example for it:

http://www.jetbrains.com/idea/training/demos/local_history.html

You can get more information from here: http://jetbrains.com/help/idea/2016.1/using-local-history.html

Answer 2

Undo it through VCS --> Local History --> Show History.