Are Opera (browser) email subjects stored differently than email bodies?

I went through some nasty glitch when upgrading awhile back and all my email disappeared. I finally got it back through the force approach of just trying every damn thing I could think of, but I only restored the ability to send and receive emails and all my old subjects. The email bodies are all blank. I had over 1,000 emails saved from the past 4 years and I really need to get them back. I’ve got some important stuff in there.

I know there aren’t a ton of Opera users here but I can’t even get a response over at their forums, I’ve been trying patiently for weeks.