InProgressDate on Epic via API only shows date if moved to in progress by story

Issue Summary

If an epic status is changed to In Progress as a result of a child story, the in progress date field in the API is set with just the date.  It does not include the time,  An example would be “2023-03-27T00:00:00Z”,

The data is still in the system, because if you do an export, the full timestamp is recorded

Also, this only happens for child stories.  If the epic is moved to in progress manually or by a child feature, the timestamp is properly recorded in the API.

Steps to Reproduce

1. Find a new epic that has child stories, but nothing is in progress yet.
2. Change on of the child stories to in progress and make sure that the parent epic was also moved to in progress
3. Do an API call to GET the ID of the epic in step 1.

Expected Results

The inProgressDate field would show the full time stamp, showing the year, month, day, hour, minutes, and seconds

Actual Results

The inProgressDate field shows only the year/month/day, with zeros for hour/minute/seconds

Workaround

No known workaround as far as the API is concerned.  The correct timestamp is visible via epic export