When you voided the payment, did you mark "Use original accounting date" or did you enter a May date?  Did you restore the invoice to "open"?

I used the may of 2023 and yes I restored the invoice to open.

If you run the report in Cash Management - "CM Balance to GL" is there a difference there, too?  If so, you may need to post in GL. 

I think what you're seeing is normal.  I think Sage is acknowledging in the following article that it's a report issue.  It is difficult because the voided check has changed in CM to zero.  You should run the report in CM - Reports - Reconciliation - Change in Void Date and put that with your reconciliation.  It explains the difference.  Sage Knowledgebase has the following:  https://support1.na.sage.com/selfservice/viewdocument.do?noCount=true&externalId=95218&sliceId=1&isLoadPublishedVer=&docType=kc&docTypeID=DT_Article&stateId=14205&cmd=displayKC&dialogID=598715&ViewedDocsListHelper=com.kanisa.apps.common.BaseViewedDocsListHelperImpl&openedFromSearchResults=true  

You wouldn't do any of the fixes in the article unless it was an electronic payment.

We use a  work around which you could use next time.  That would be just to hand type a replacement check and note that it replaces original check #xxxx on the face.  Make a copy for your records.    When the replacement check clears, clear the original check.