How to split Requisition Line without changing Requisition Status

I have a requirement to replicate Autocreate PO behaviour using API. I used this package: po_requisition_update_pub

I had successfully "splitted" the requisition lines by adding new lines with the same attributes as the old line. The problem is everytime the process is done, the requisition status is changed into "Incomplete", while if user "Modify" the lines using Autocreate, the status remain unchanged.

What should I do with the API so that the requisition status don't change into "Incomplete"?

Please Advice,

Thanks