[Zope-CMF] member properties disappear

[Howard Zhang]

Hi all,
  We develop a Website use Zope 2.4.3 and CMF 1.1.  Today when I export
the member's properties. I found some member's properties were
disappeared.
The reason I found is these member records stored in portal_memberdata
were lose, but acl_users still has all portal user object( for example,
there is a user named
howard  in portal acl_users, but no record id is howard stored in
portal_memberdata ). I restored the yesterday's backup. Everything looks
ok.=20
=20
  Does anybody can tell me why?
=20
Thanks a lot
=20
Howard
=20