Can attachment query within bursting be updated to get attachments from OM or SMC modules

Summary:

We have a business case where attachments from Order or subscription need to be sent along with invoice copies. While this is achievable by manually going and attaching the document to the invoice before it gets sent via print receivable transaction - we need an automated way so that the document can be grabbed from the subscription or sales order associated with the invoice.

We have a query to get to that as well - what we are needing help is whether that query can be used in the bursting query's Attachment section.

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