Uploading project quotation header and lines: sales quotation header & lines entity not working

Hi,

I am trying to export quotation header & lines using the entities SalesQuotationHeaderEntity & SalesQuotationLineEntity. Only quotations of type sales are downloaded, apparently this ain't working for project quotations.

I don't find entities specifically for project quotations. What can I use for this since I have to demo this next week.

Any help appreciated.