DeliverabilityUpdate workflow

Hello everyone, 

I have a deliverability issue right now. After the ACC platform migration, the DeliverabilityUpdate workflow did not restart. It was restarted 1 month and a half later. I'm assuming the deliverability rules were not updated during this period. Once the workflow has being started, the rules were updated and the new deliveries (or retry) are correctly processed now. But what about old deliveries ? 

Does anybody knows if Adobe will update old broadlog ? And if not, how can I force this process ? There are two options