This is a simple guide on how to run both betas (stable and opt in) without having to re-download everytime you want to switch versions.

1. Go to whatever drive you have STEAM installed.
2. Go to Steam folder
3. Go to steamapps
4. Go to common
5. Select the America's Army folder and copy it
6. Paste that folder to your desktop and rename it with either -stable or -optin
7. Go to steam library
8. Right click on Americas Army Proving Grounds
9. Select properties
10. Click on betas tab
11. Depending on which version you currently have...select "NONE" or "test - pre release"
12. "NONE" is current stable version and "test - pre release" is the opt in
13. Now the other version of the beta is downloading in your library
14. To play the version you don't currently have installed simply go to your folder you copied to your desktop
15. Click AAPG
16. Click Binaries
17. Click AALauncher32

Now you can play either version without downloading back and forth.
Note: If they release an update to the OPT-IN you will probably have to re-download it. To remedy this I would suggest you keep the Opt-In active in your steam library so it stays up to date as they release updates every week or so.

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