Cannot Move Engage Intercation in TopBar Right in Player

Hello

I created Engaged interaction in Tab , in Presneter '13.

From the Player Properties , I moved it from TopBar Left to TopBar Right, but I soon as I click OK and return to Player Prrperties they 're back in TopBar Left.

When I publish , it stays in TopBar Left.

I have the latst update of Articulate Studio '13 - Update 2

What's wrong?

thank in advance for your support