How do I reenter credit card payment received online in previous year that are showing deleted in AR report
If it is showing as deleted, you just re-enter it and re-reconcile it. I am struggling to understand why you are seeing it on an AR report.
But I am sure if you went to reconcile, you will see it deleted there too (opening balance will be off). Go to reports and search for audit log. Then search for deleted. Find the transaction. Recreate it. Then go to the bank register and click the space for cleared for that transaction until an "R" shows. This will force re-reconcile the transaction you accidentally removed.