This body was split into two by using split command and tried to use Move/Copy bodies command to move the small body but it was not detecting the body.
With solid bodies you can click the graphics area onto the body, surface body doesn't seem to. Expand the surface body folder here while in the move/copy body feature to get what you're after. Or prior to making a move/copy feature, expand the surface body folder, pre-select the body you want, then open/create a move/copy feature and get on with it.
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