BIX will extract the property value as is. You can extract the attachment's encoded value into a column in the target database or as a XML element or a CSV column. BIX will not convert it to the actual attachment file and put it in the extract folder.
That said, is there any issue while extracting the encoded value to csv failing? If yes, please provide the failure logs.
Thank you very much for the reply, actually i tried extracting the encoded valued using bix, but outofmemorry issue came and server got struck, As the encoded value is of large size. if i try to extract the value to csv value , its not getting extracted.