Tried to redraw maps then showed the way (7)

I believe the answer is:

sampled

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'tried' is the definition.
('sample' can be a synonym of 'try')

'redraw maps then showed the way' is the wordplay.
'redraw maps then' becomes 'samp' (I can't justify this - if you can you should believe this answer much more).
'showed the way' becomes 'led' (I've seen this before).
'samp'+'led'='SAMPLED'

'to' acts as a link.

Can you help me to learn more?

(Other definitions for sampled that I've seen before include "tried" , "Tasted" .)

I've seen this clue in the Evening Standard.

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