Vendor checks may be printed on the wrong check number when the Accounting / A/P / Pay Bills window is sorted by Name and there are vendors with similar names, but the letter case does not match.
For example, if there is a vendor named Acme and one named ACME Grain Haulers, the check for ACME Grain Haulers will print first even though Acme is listed first at the Pay Bills window. The journal entry is created for the correct dollar amount for the correct vendor; however, the check is printed out of order.
Before paying the bills, edit the vendors at Accounting / File / Open / Vendor and change the letter case to match.