The approver must turn this feature on if a policy owner can't see tracked changes. This is a requirement for organizations using the global policy approval workflow.
Note the following:
The approver, not the owner, is responsible for enabling Track Changes.
All modifications are now visible to the policy owner.
How to Turn Track Changes On/Off
Log in to Thoropass
In the navigation bar, select Policies
Click on the Policy.
In the document editor, click the Collaboration tab (at the top).
Turn Track Changes on or off for yourself or everyone.
Related Article: What are Policies?