Change Auditor 5.7 can be upgraded to ChangeAuditor 6.0 from the following versions of ChangeAuditor: 5.6, 5.7, 5.8 or 5.9.
If you are upgrading from one of these 5.x versions, you will NOT require new ChangeAuditor 6.0 licenses.
You can upgrade to Change Auditor 6.6 from the following versions of Change Auditor: 6.0 or 6.5.
If you are upgrading, you will NOT require new Change Auditor 6.6 licenses.
Only a new fresh install of Change Auditor 6.0 , 6.5 or 6.6, will require a new 6.x license.
Please note when upgrading from 5x to 6x versions, read carefully the system requirements as there are substantial changes in System requirements .
For steps and video on how to upgrade Change Auditor please refer to the link below:
How to Upgrade Change Auditor + Video Link