I created a model and added some Actions in the DopeSheet editor (more or less 5).
I exported the model to my game engine, saved the .blend file (Ctrl-S) and closed it.
Then I opened it again, and all the actions were gone, it just had the one I was using last.
The same happens with some preferences (for example, I disabled mip-maps on User Preferences -> System, and I have to re-enable it every time I open the .blend file again.
Does somebody knows how to restore the Actions and save everything? Thanks.