Invoicing Error when using Sales direct delivery

Hi,

I am wondering if someone here has ever seen this type of error when doing direct delivery.

Looking at the two intercompany invoices for one order , they appear to be correct. If you look at the invoices at the parent company , there is only one invoice and it includes 2 packing slips that shouldn’t be there and one that is missing. The invoice totals are correct and match the intercompany invoice .
Then If you go to the parent company and try to post an invoice, it wants you to post two packing slips where One is for qty that doesn’t exist on the packing slip because the correct qty on that packing slip is another value.
Any clue on how this could happen?