ApacheDS 1.5.7 to ApacheDS 2.0.0-M19 migration

[Sunil Kalahasti]

Hi all,
 
We have ApacheDS 1.5.7 LDAP server with separate partition and some custom 
objects.
 
As we have new features in ApacheDS 2.0 version like password policy etc, we 
would like to upgrade / migrate to ApacheDS 2.0.0.
 
Could anyone please provide good pointers with regards to upgrade ApacheDS 
1.5.7 to ApacheDS 2.0.0?
 
If this is not possible, could you please guide which schemas we are supposed 
to import and how to import the user records.
 
Thanks,
Sunil Kalahasti