EKBE show on report even if blank

I have linked tables in the following order EKPO EKET, EKKO and EKBE.

I have got the report to show Purchase order, line item, stat date etc, but when I add EKBE, I only get shown purchase orders which have a transaction done on them already.

I want the query to show all purchase orders and lines whether it has had a movement on it or not.

Basically, I want this report to show whether a movement has been done or not on a purchase line item.

I have searched everywhere and cannot find an answer.

Please help.

Thanks

Pete