I don't even know how to describe this mess...

Basically, sometimes when I try to animate a moving object (or just move the object around on the stage), it turns from this (whatever the object is supposed to look like)...


...into this.


It seems to be reselecting a portion of a larger version of the object. I don't know why, and I'm literally tearing my hair out trying to figure this out. Could someone help me? Please keep in mind that I've only been using Flash for a couple of months, I my have trouble finding specific tools, settings, etc within Flash.