SSIS Connection Manager Not Saving Changes

Problem:

The Connection manager has been configured to be updated in Package Configuration.

Solution:

Go to “Control Flow” tab -> right click -> Package Configurations

Set to point to new configuration file.

Source:

https://social.msdn.microsoft.com/Forums/security/en-US/8fb47c45-f1d9-4eaa-a2a1-f126ccbc1ef2/connection-manager-changes-are-not-saved-after-edit-the-package-still-retains-the-old-server-name?forum=sqlintegrationservices

https://social.technet.microsoft.com/Forums/officeocs/en-US/7a9f1ea3-7dbf-4389-9856-9ad745c9e9fe/ssis-connection-manager-not-saving-changes?forum=sqlintegrationservices