How are text messages stored in Windows Mobile?

[06MS6]

Ok so here is my situation.

I've been storing my text messages on the Internal Storage card, an idea found in one of the posts here. I figured doing this would do a couple of things, it would save me precious system storage space and it would allow me to easily get my messages back after a flash. Well it seems that is not the case.

I flashed to Mighty 4.1, where storing messages in Internal Storage is done from the get-go. I can see all the files for my old messages from before the flash but they do not show up in my text inbox. I am just wondering if anyone knows how Windows Mobile keeps track of the text message files since it seems it is not as easy as taking those files and putting them into the current store folder.

I used to use PPC PIM backup to backup my messages but after a while the threaded conversations weren't showing up correctly, even though all the messages were there, so I thought this would be an easier solution.

Thanks for any suggestions/ideas.