Getting customer statement as activity report

I am trying to get an activity statement for a customer.

Go to Sales->Customer Statement. Select customer, select date range, select statement type as "activity" and.... get nothing. Report is empty. 

Yes, there are sales and payments for the customer for the period. In fact "invoice" statement shows correct balance.

Now, for interesting part -- I tried to get same report for bunch of customers and only handful of reports were generated. 7 customers selected - 4 reports received. Same functionality used to work in the past for same customer.

I did ask MYOB, was told it will be escalated to development team and that was the last I heard from MYOB in more than a week. 

So, was wondering if anyone else saw same and found a workaround

Thanks

Rudolf