PBIRS March 2018 - Erased Data Source Credentials

We recently upgraded to the March PBIRS 2018 release.  In testing I noticed that my PBIX reports lost their credentials that were stored prior to the upgrade. 

We use service accounts with Basic Authentication. 

After the upgrade all of my PBIX reports now show Authentication Type = Anonymous.  I have 10+ reports with 5-7 connections in each (JSON API queries).  That is 70 places I need to update with account and password.  Not fun!!

Did anyone else experience this?  Is there a setting somewhere on the Server that controls this?

Thanks in advance, Scott