I don't think the remains were ever moved - I think they were too spread out for that to have happened. I do believe the family knew she was in the woods, but from what I've seen of the area, even KC couldn't have just walked right back to them in the summer when everything was grown up. It's disorienting in heavy growth like that. That's why the PIs were having to search the area.
I know a lot of folks are tired of GR on Fox putting JB on and giving him air time, but remember GR works for the network and he would not be negotiating for licensing fees or interviews. Also, way back when CA did her first live spot on Fox, JB followed her with GR. They were both, CA and JB, rather mean to Geraldo. Geraldo even got defensive with JB saying "I wish everyone would stop blaming ME - I'm trying to help by putting this on national TV". A few days later GR reported on air that JB had stopped even returning his calls. I think GR is just putting on both sides when he airs the defense point of view - he believes in KC's guilt like most people.