When Deploy Image task has 'Upgrade Symantec Management Agent to the latest version.' it is noticed the agent stops/reinstalls after boot to production even if the agent in the image is already on the latest version
Deployment Solution 8.x
In at least one instance of this issue, it was discovered that the custom Deployment Job had a task to modify the Symantec Management Agent service to start automatically after the client is booted to Windows.
Manually modifying AeXNSClient service after boot to production is not recommended. This interferes with the expected service behavior and may cause unexpected issues.