WBM Full Extraction Issue

Hello Team,

I have done the Full extraction on wt.epm.structure.EPMMemberLink once and the data got extracted into Stage Table.

But, looks very less data I got and have done very long back. Instead of generating report, I have truncated the table in Stage DB. and started the full extraction once again  for same object. This time nothing is getting extracted. Can you please help me, what I can take further action on the same ?

Have checked client and server logs. There is no exception on the same.