Quotation Price Breaks Update using the PDOI

I am trying to update the Price Breaks in the Quotations in Oracle R12 using PDOI. I found this script and been trying to "UPDATE" the Price Breaks. Problem is that whenever i insert the data in the PO_HEADERS_INTERFACE, PO_LINES_INTERFACE AND PO_LINE_LOCATIONS_INTERFACE table and run the "Import Price Catalog" Program form the Requests it instead of Updating the Price, it removes all the existing Price Breaks and Insert the Newly added Price Break instead. What would I be doing wrong here? Also FYI I just checked and I did passed the ACTION as 'UPDATE' in the PO_LINE_LOCATIONS_INTERFACE but, after running