The Treo eats saved text messages

The only reason why I even keep this phone around in my room with enough charge to look at it always is because of this text message. When my normal phone broke I had to use this phone until AT&T shipped me a new, non-broken phone. I had four text messages saved on my old phone, this being the one actual important one. The texts were saved to my sim card, so they automatically transfered to this phone. When I got my old phone back, I made sure this text was still saved and I put my sim card back in my old phone. When I went to saved texts, the folder was empty, for some reason the texts stayed on this phone and I can't figure out how to get them off it. I have never been more upset in my life, because this text means a lot to me, and so does the person who sent it to me. This phone will never leave my sight or my room, this text means too much to me.