We have a Plan allowing users to edit the [system] Due date field. When an Initiative reaches a milestone, the Due date is stored in the End Date field so we have a baseline to compare against when the work is complete.
My automation sets the End Date to the Due date.
Doing a search for the updated Issue, the dates are different. The End Date appears to be 5 hours behind, presumably to adjust to CST. I assume this is because the difference between Date and Datetime fields. I've tried applying the addHours function (I'm Data Center) and even the cloud plusHours function, but neither seem to work.

Any advise is MUCH appreciated!
Thanks in advance,
Steve