Answer: redates

AnswerCrossword Clue
REDATES

Alters a contract, in a way

REDATES

Repeats a carbon-14 test, say

REDATES

Repeats a carbon-14 test

REDATES
Changes the time of.
REDATES
Makes current
REDATESGoes out with again
REDATESCorrects, as archeological records
REDATESTime-stamps anew