Late Charge Incorrect Calculation (Overdue days and Number of days used for Interest calculation)

Summary:

Late Charge Incorrect Calculation (Overdue days and Number of days used for Interest calculation doesn't match)

Content (please ensure you mask any confidential information):

Customer Site Setup as below:

Result:

When there is only 4 days overdue, why does it calculate interest charges for 31 days?

Version (include the version you are using, if applicable):

24A

Code Snippet (add any code snippets that support your topic, if applicable):