Unoriginal work (6)
I believe the answer is:
rehash
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">unoriginal work</span>' is the definition.<br/ ><span class="explanation-format__explanation">(rehash of earlier work)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for rehash that I've seen before include "new disposition" , "Reworking of old material" , "Recycled material" , "Same material, different mix" , "Makeover" .)