Moons, if a lot of things are getting edited on both devices, and then they're being synced up later, you may be running into what I describe in
this post.
Specifically, if the same item changes on more than one device (including changes the app makes automatically) between your syncs, whichever change happened last will override the previous ones. We do it this way to keep your sync times as fast as possible. That
may explain what you're seeing.
If so, the way to work around this would be to make edits on one device, then sync it before switching to the other one. (And sync the other device before you start working there, so it picks up the most recent data.)
If that doesn't sound like what you're seeing, email the
support ninjas and we can investigate. We'll probably need some screenshots, and I assume you don't want to post them on the forums for the world to see. :-)