Intellij IDEA Project view doesn't show structure as it did before.

Question

My directory structure in the Project seems to have disappeared. The first picture is the "bad". I recently upgraded to 12.1 and the vim emulator at about the same time. I don't know if I missed a dialog that reset something? I can't figure out how to get it back like the second picture.
I've tried to re-import the project but it has not helped. I keep the project on Dropbox and have another PC where I have not reloaded project. Is there a way to get my view from that machine?

The picture is the "good" and how I want it to look.

Answer 1

I've come across this problem a few times myself. What happened is that intellij lost the module in my project settings. Here's my steps to fix it:

File -> Project Structure -> Click on modules (notice empty list) -> Click on '+' -> Click on import module -> Find existing myProj.iml

Answer 2

I also have quite a few IntelliJ projects and also git folders of text files. I found IntelliJ does not always reconstruct the .idea files correctly. However the following methods work for me.

Open IntelliJ in the top folder where there is no .idea folder. Often IntelliJ will just construct a new .idea folder and works.

Copy an .idea folder from a similar project and modify to fit. The xml files in the .idea are reasonable to modify.