Issue
Nintex Workflow Inventory does not direct to correct Alternate Access Mapping URL when attempting to edit workflows.
Resolution
Update Nintex Workflow to the following version or later:
Nintex Workflow 2010 - Version 2.5.6.0
?Nintex Workflow 2013 - Version 3.3.0.0
?Nintex Workflow 2016 - Version 4.3.2.0