Isn't this something to do with the fact that you can't duplicate/copy/paste an object once it has a skeleton attached? Dragging an object to the browser must be like copying and pasting and C detaches the skeleton automatically. [I tried saving a boned object file to a new folder, loading that folder into the browser and then dragging the object into a new file but that really messed things up.] The simplest work-around appears to be: i) Drag your object with its bones attached to the browser. ii) Drag browser object to the sequencer of a new file and immediately attach the skeleton. Then position where you want. iii)To duplicate with symmetry, detach bones then duplicate the object, then the skeleton. Select the new object and skeleton together and attach. Hope this helps. Great hand!