Took away or put back on the agenda? (7)
I believe the answer is:
removed
'took away' is the definition.
('remove' can be a synonym of 'take away')
'on the agenda?' is the wordplay.
'on' becomes 're' ('on' can be mean 'with reference to').
'the agenda?' becomes 'moved' (I can't explain this - if you can you should give a lot more credence to this answer).
're'+'moved'='REMOVED'
'or put back' is the link.
This may not be correct. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for removed that I've seen before include "Having made a withdrawal" , "Withdrawn" , "Took away" , "Got rid of" , "Taken away" .)