I have had some real problems with my blackberry as of late.
I went to sync up my desk manager to my bb to move contacts over and what keeps happening is it will overwrite ones already on there, even when I set the option to not replace them. What happens is say Bob Smith is on my BB but not on my computer, when I go to sync it up Bob Smith's information disappears and just his name remains on my BB but he doesn't appear on my computer.