An administrator changes a policy, submits the policy for approval, approves the policy change, and clicks the View all Proposed changes link. But, no differences are shown between the original policy and the policy that was submitted for approval. The number of differences shows 0. 

This issue occurs mostly with policies that are imported from another ePO server.

NOTE: ​This issue occurs only with ePO 5.10 when Policy Approval is enabled through Server Settings.