@karyal
Hey there. So it looks like Survey123 is storing the date as a number of milliseconds since 1/1/1970. Weird, right?
To account for this, try inserting a Compose step above your excel step with the following expression:
addSeconds('1970-01-01', div(<DATEFIELD>, 1000))
where <DATEFIELD> is the dynamic value from your survey.
Hope that helps, please keep us posted.
-Ed
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