Root Root explorer question

[MCPO117]

I'm trying to use root explorer to move my SU to the xbin so I can get around losing my root with 2.2. When I move it and go to paste in the xbin it says thats a read only area. If its read only then why are numerous sites say that how to move it? Am I doing something wrong?

 

[apache21st]

at at the top it say r/o click it and change to r/w,

Its just a safety measure so you don't accidentally delete stuff