A question recently popped up on the Asana forum: how can you identify tasks for which the deadline has been missed, even though it has been changed since. Turns out the solution is quite easy using the native Rules in Asana.
I hope this short video can enlighten you!
If you have any other questions, I am here 
Good video, @Bastien_Siebman.
Why canât you also automate the third option, with this rule?
If task is overdue, then set âMy Missed Deadline Custom Fieldâ to the option âDeadline was missedâ
Thatâs exactly what the 3rd option is, isnât it?
Oh yes, sorry, @Bastien_Siebman, I watched again and I had mis-heard you. For the third option you said âmanuallyâ so I thought âheâs saying to manually set the custom fieldâ but your point was that you could manually set it if you wanted outside of the rule running. So, very good!
You didnât mention the option to enter all deadlines > âProject Name drop-downâ > Export/Print > Sync to Calendar.
This moves all dates to outlook and prompts a pop-up and task reminders based on your Outlook calendar/ task settings.
I usually have a âFinal Taskâ to âExport deadlines to Outlookâ
@JenniferBrown_Tampa exporting to a calendar helps see a task that is overdue, but as soon as someone changes the due date, you lose the info it actually missed a deadline at one point.