Extraction of SD doc "Inquiry" (created with VA11)

Hello !

I'm wondering if a standard extractor exist on "Inquiry" (transaction VA11, VA12...sometimes call 'offer' or 'quotation') from SD.

Inquiries are stored in table VBAK but apparently are not extracted by 2lis_11_vahdr....

and on the other hand, 0doc_type extracts doc type AF : inquiry ! which is not consistent.

in the document on sapnet "Extracting Sales and Distribution Transaction Data" it is written :

"No provision is made for extraction of data relative to event VG (customer inquiry). This means that inquiry data cannot be transferred to BW."

Any experience with extracting "Inquiries" to BW ?

thanks and best regards

Philippe