Replication steps :
1.Create the document with template version/name/description and mapping field(Date should not be selected)
2.Template library > Check that valid from and valid to Dates are shown blank as they were not selected wile creating template
3.Edit template > Open template > Save without any changes in date fields (Keep the date checkbox unchecked)
4.Traverse to template library page > Observe that Date is auto populated in Valid from and Valid to date n template library dashboard.

Expected Result : Even though dates are not selected it should not show in dashboard of template library page once the template is saved without any changes in date column

cc - Priya Dhamande Hrishikesh Deshpande Satya Samir