Retain Datetime value

[Beniovo]

I wish to summarize a calculated table to remove duplicate values from column  Test-newName and retain the first datetime stamp for each ID. However I lose the datime value and all the stamps are given a timevalue of 12:00am. Any way to keep the timestamp with summarize or a way around it. I attached a smaple data.

The ouput I get looks like this

The dax code used is something like this >

 Table 2A = SUMMARIZE('Table, 'Table'[Test-newName], "event_date", FIRSTDATE('Table'[event_date].[Date]), "acc_id", FIRSTNONBLANKVALUE('Table'[acc_id], VALUES('Table'[acc_id])))

Thanks

@Greg_Deckler 

[lbendlin]

Please provide sample data (with sensitive information removed) that covers your issue or question completely, in a usable format (not as a screenshot). Leave out anything not related to the issue.
https://community.fabric.microsoft.com/t5/Community-Blog/How-to-provide-sample-data-in-the-Power-BI-...
Please show the expected outcome based on the sample data you provided.

https://community.fabric.microsoft.com/t5/Desktop/How-to-Get-Your-Question-Answered-Quickly/m-p/1447...