Hi bgrooms01 , since your question is product specific, I'm going to move it to the Sage BusinessWorks Support Community.  Thanks!

If you set up a sales account for your cash account and selected it as the distribution for the invoice, this would post a debit to cash.

I'm not sure I follow. This is what i did. I voided an invoice with no payment history against it. When I voided the invoice a credit memo printed out.  That credit memo shows up as money received in accounts receivable when i really did not receive money.  It never did this before until a few months.

The only time a credit memo should affect cash is in the first answer above or if you select a refund. It is better for you to call Customer Support 800-447-5700, option 3 so that we can troubleshoot this issue with you.