Commented Issue: Upgrading from 1.4 to 1.5: Related issue unique index [256]

When upgrading from 1.4 to 1.5 I found an problem if an issue contains a reference to the same issue on the Sub issue page and Related issue page. It creates two entries in the BugNet_RelatedIssues table and makes impossible to create the unique index when the migration script is executed. Perhaps should the RelationType column also be included in the unique index?
Comments: I have fixed this issue, but also discovered that you can add a sub issue and a parent issue to the same issue so I will open a new bug for that.