Yeah that's the one I was using. I thought it was just that app but it does it with all of them.Not sure why your outgoing conversations would be missing but as for SMS backup apps, have you tried SMS Backup+ from the Google Play store? I've been using it to save my own texts and haven't run into any of the issues you've mentioned. You can set it up to automatically save texts to a gmail account (if you have one). I find it does this seamlessly.