discrepency in reported shareholding data

#1
dear friends,
i had been always a deep observer of share movement in company analysis. this gives a first hand view of supply/demand scenario. but there is a catch which i noticed several times.
comanies have reported change in share holding data of promoter without being reglected in insider trade, SAST or through any other medium.
how is it possible that share holding of a promoter is changed without reporting it to bse.
does any of seniors have clue how this can happen? how they escape even though they report change in holding in their quarterly submission.
rajneesh