2.0 DDL upgrade script does not match full 2.0 DDL
Steps to reproduce
There are a number of mismatches between the main DDL setup file, and the 1.6->2.0 upgrade script.
mh_series_property does not define the same set of constraints
mh_user_settings does not define the same set of constraints
IX_mh_comment_mh_comment_reply_replies is completely missing from the upgrade script
Out of date