New LOD Problem: Saving u_u

Okey guys, here goes~

I played The Legend of Dragoon for about three hours, give or take, saved via save point, and took a short break. After I launched the emulator again, it had reverted back to my earliest save, made right after the introductory battle in Seles. So I have some questions:

a) ..wtf just happened?
b) Is this a problem with ePSXe, the LOD iso, or a mixture of the two? Is it a commonly known problem?
c) What preventative measures can I take to ensure this doesn't happen again? (backups, alternative saving options)

Specs:
Emulator: ePSXe 1.7.0
Bios: SCPH7502
Video: Pete's OpenGL2 Driver 2.9
Sound: ePSXe SPU Core 1.7.0

Laptop, Vista, 4 GB ram, ATI Mobility Raedon HD 4330

I haven't had any trouble playing the game ever since I got it set up, apart from some very minor lag at the start of the cut scene in Limestone Cave. And, as you can see, I'm fairly new to using ePSXe for long playing times, so any help is appreciated. :|