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Preferred Deals moving into Ad Manager
From 10/31 onwards, legacy Preferred Deals that were not created in Google Ad Manager will become read-only and non-modifiable by the buyer or seller. Additionally, all legacy Preferred Deals will become inactive on 3/31/19.
Having completed the migration of all new creatives to sizeless creative verification, migration of existing creatives has begun. Creative IDs that have been in our system since before we began the sizeless migration last fall will begin to be migrated to sizeless at the rate of 5% per week until we are complete to ensure a smooth transition.