Archived cards are not included in your 6AM task summary email

When you archive a project, it’s possible that some cards still had Due Dates set on them: these dates are preserved along with all the other project data at the time you do the archiving.

But, these dates, which will inevitably become overdue dates over time, are not included in your 6AM task summary email, because there’s nothing you can do about them while the project remains in the Archive.