title: Export projects for Android Studio with different Unity versions
body: <p>INTRODUCTION:
  I exported android project from Unity version 4.6.1f1. After that, I imported it in Android Studio. I worked on a project for a few days and everything worked as supposed to.</p>
  
  <p>When I change something in Unity, I just export android project again. In android studio, I delete ASSETS folder and then paste the new one that I get from Unity export. I did this in Eclipse to update my project. I am doing it now and everything works just fine.</p>
  
  <p>PROBLEM PART:
  Then, I updated Unity to version 4.6.2p2. I exported android project again. I changed ASSETS folder as usual. I also changed unity-classes.jar. I used this method in Eclipse before and it worked for me (apparently it worked for a lot of people, as my research on the internet confirmed it).</p>
  
  <p>This does not work in Android Studio. I get error</p>
  
  <p><em>Invalid serialized file version. Expected version: 4.6.2p2. Actual version: 4.6.1f1.</em></p>
  
  <p>I tried: restarting Android Studio; cleaning and rebuilding project; syncing gradle; using other versions of Unity,... I also tried removing all dependencies, cleaning project, then adding dependencies again and rebuilding project. </p>
  
  <p>I did not find any reference to this problem on the internet.</p>
  
  <p>The only solution I get so far is to import project in Android Studio as new one and then do all the work again. But that is very undesirable.</p>
  
  <p>Did anyone has this problem and come up with a solution that will not require making new project from scratch?</p>