Why Would an Administrator See the Message Below

Why would an administrator see the message below?

A) A new Policy Package created on both the Management and Gateway will be deleted and must be backed up first before proceeding.
B) A new Policy Package created on the Management is going to be installed to the existing Gateway.
C) A new Policy Package created on the Gateway is going to be installed on the existing Management.
D) A new Policy Package created on the Gateway and transferred to the Management will be overwritten by the Policy Package currently on the Gateway but can be restored from a periodic backup on the Gateway.