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And the following search string which you should add to the Search String field in the schedule which will also serve to narrow down the Content Items that will have the selected business rules run on them:
imageAndUsageInformation.expiryDate:[now+9d TO now+10d] OR multimediaAndUsageInformation.expiryDate:[now+9d TO now+10d] OR otherContentAndUsageInformation.expiryDate:[now+9d TO now+10d] OR documentAndUsageInformation.expiryDate:[now+9d TO now+10d]
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