Some transactions for a couple of customers not getting picked for late charges

Hi gurus

I have a number of customers that have multiple overdue transactions. The transactions span that of invoice types Interest Invoices, Data Conversion invoices and normal invoices that got generated under normal circumstances.

Customer	Account No	Transaction No
TEST	15679	INB048251
TEST	15679	INB053071
TEST	15679	INB058231
TEST	15679	INB063261
TEST	15679	INB077061
TEST	15679	INB100761
TEST	15679	2009248
TEST	15679	2009248A
TEST	15679	700410

So table of data above shows the first 6 invoices that relates to DATA CONVERSION transaction type, then the numbers that start with 2 are interest invoices and the last one is just a normal credit memo.

The first 6 invoices was not picked for interest but the last 3 were.