RE: RM - Statements showing documents that have zero balance. Have already done paid transaction removal??
If the debit memo is in OPEN, and the credit memo is not, and you want to apply them to each other, you need to use the "RM unapply transaction' tool in Professional Services Tools library to unapply the credit memo and move it back to open. Once both are in open, you can re-apply them to each other again. If further assistance is needed you may want to reach out to your Microsoft Partner, or open a support case with Microsoft Dynamics GP Support and we can help you further if needed.
Thank you,
Cheryl W
Microsoft Dynamics GP support