Is is possible to transfer prior accounting reconciliation references

Summary:

Need to have reconciliation references transfered for entries prior to set up

Content (please ensure you mask any confidential information):

We are looking to set up the Clearing Account Reconciliation process. As part of the Clearing Accounts Reconciling Automatically, the reconciliation references need to be populated on the journal lines. Since we were not initially passing the reconciliation references on journal lines, we will need to set up and send over. However, I assume that this will only occur from setup. Is there a way to have the reconciliation references be updated on the journal lines for past journals? This an inventory clearing account and there are 1000s of journal lines.