Delta missing some documents in 0FI_AR_30

Hello,

Does anybody know based on which date(CPUDT or BUDAT) extractor 0FI_AR_30 gets the records into delta queue? we are facing the following issue,

Document is created on 01.08.2013 at 20:00 PM

CPUDT: 01.08.2013

BUDAT: 31.07.2013,

Previous delta was loaded before the document created. But when the delta ran the next day on 02.08.2013 4:00 AM, it did not get this document into BI.

Any ideas?

Thanks & Regards,

vamsi.