Still in existence (6)
I believe the answer is:
extant
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">still in existence</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for extant that I've seen before include "Still going strong" , "still alive" , "Net tax still existing, not gone" , "Not destroyed or lost" , "left" .)