On the new Prepayment feature for Receivables, is there a workaround to do adjustments?

Summary:

I need to do adjustments after the prepayment application, but Manage adjustments is no longer enabled once the invoice where the prepayment was applied is completed. Is there a workaround for this? We need a solution for manual handling of prepayments that will still allow adjustments after completion of invoice. Thank you.

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