ACA: If continuous enrollment of last year without any user interaction which came on the Jan Full file in this case event date should be as 01/01/2017 in OFFR element.

Employeee enrollment effective date -01/01/2016
Enrollment TerminationDate -null

Explicitly user didn't raise any event in this case which populated the events data under OFFR element with old year (2016) event date
which should be considered as of New Year (2017)