Settle Planned Delivery costs through EDI Invoice

Hi,

We are planning to do EDI invoices for POs. But we came across the following SAP documentation that says Planned Delivery costs cannot be settled through EDI.

http://help.sap.com/saphelp_sm32/helpdata/en/44/f50abcea3b11d194dc0000e83dd751/content.htm

Is there any way to settle planned delivery costs through EDI? If we have to go for user exit and IDoc extension , what would be the logic to post planned delivery costs.

Thanks

Sukumar