for a few weeks now, and including the git commit af677f6d0667bacba72defeaee7e76557e68f8c8 that I last tested, the Agenda Bulk Scatter (BS) has had a bug whereby items it reschedules have the DATE lost.
As an example SCHEDULED 2011-12-12 ends up as SCHEDULED after BS org-mode 7.5 did not have the problem Cheers, RJ Cunningham