Service Desk users cannot edit Knowledge documents after RU patch was installed.
When clicking edit, it does not bring them to the default location.
CA Service Desk Manager 17.3 and 17.4
Installation of RU reverted Knowledge settings to default
Issue caused by incorrect setting found here:
Administration > Knowledge > Approval Process Manager
Change "Permissions for Document Edit after Publish" to "User with full permissions may edit documents after they have been published"