Transient matters that man initially managed in record time (8)
I believe the answer is:
ephemera
This clue could be a double definition.
'transient matters that man initially managed in record' is the first definition.
'ephemera' can be an answer for 'transient matters' (ephemeral or transient things). I'm not certain of the rest of the definition.
'time' is the second definition.
(I know that ephemera is a type of time)
Can you help me to learn more?
(Other definitions for ephemera that I've seen before include "Flyer" , "items not lasting long?" , "Temporary matter" , "They're soon over" , "Things lasting only briefly" .)