FI Document Splitting. the profit center amount become zero after splitting.

I post a FI document with document type "SA".

Two items has profit center.

But when I display the document with "General Ldeger View" mode,

there are four items and the other two items(Zero Balance Posting) clearing the profit's amount, and the sum of profit's amout is zero.

I don't want to use the Zero Balance Posting and only want to left two items in general ldeger view, Is there any solutions(customize) ?

Thanks very much.