You are not missing anything, this feature does not exist yet.
I would love this feature as well!
I upgraded my whole team to the business tier recently, which created a big headache now having to manage split divisions, with the expectation this would be something we could set up as a rule. Even just to be able to mirror the parent task due date as a the subtask due date would be a huge benefit. The one janky workaround Iāve found is with monthly recurring tasks that are generated on the first of the month, using the subtask rule and relative due date (assume all months are the same number of days). You have to create the original parent task on the first of the month for this to work. Not ideal! A little concerning that a feature request can get this much consistent support from the community for years and not make it onto the roadmap 
We canāt shift subtask due dates automatically if the main due date of the card changes. I changed due date to Thursday so the other due dates within should change accordingly e.g. 2 days before publish. You can do this in Projects but I donāt want to create a new Project for every blog post.
I know you can set a Task Template and even set due dates āx days after creation date.ā However I often set tasks on our calendars in batch, ahead of a quarterās content needs. Itād be best to add āx daysā ābefore/afterā ācreation date/due dateā and then, if we need to change the publish date of the card (what we use ādue dateā for) the subtasks will automatically follow (e.g. 7 days before publish date, find images for article).
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Thereās already a Product Feedback item for this request so I merged yours in.
Also FYI you can do this using the Auto-Adjust Workflow in our Flowsana integration; and we just introduced a new option making it even easier to make subtasks adjust when their parent task adjusts:
I am having the same problem with Asana - ie connecting parent task and sub tasks due dates and came across this. Is it fair to assume Asana isnāt planning to add this feature as it has been five years since the first request?
This is should be basic functionality for any project management tool!
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I donāt think this has any basis: first of, Asana does not have to do anything that anyone asks, they have a vision, a roadmap, limited resourcesā¦ and they make choices. Second, we know they are constantly re-evaluating topics, this one probably being one of them!
(remember: I donāt work for Asana, this is my personal view)
Hey Asana - are you guys planning on implementing this anytime soon? Itās been 5 years since the feature request was logged. This is basic, table stakes functionality for a project management platform
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Hi @Jessie_Wood ,
Asana does not communicate on the roadmap sorry.
Hi! Is still not posible to change all subtasks due date changing only the task due date?
Example: If I delay in 1 week the whole task, all subtasks whitin this parent task should be delay in 1 week as well.
Is there a way of doing this without having to change 1 subtask at a time?
This is still not possible. Hopefully, this is something the Asana Product Team is looking into.
I agree with this. This is a basic feature that we need implemented immediately !
+1 need this
This would be a game changer! Absolutely needed.
Is thisā¦ is this still considered a ānice to haveā FIVE YEARS after the original request? Like so many other folks in this very long thread have stated, this is pretty straight-forward functionality. It causes so much unnecessary manual work and confusion to not have this.
Will this actually be addressed or are we being told āneat ideaā as a brush off tactic?
Larger note - a lot of elements of the platform are lovely, but this is an example of it missing some key basics.
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i cannot believe this functionality is not available!!! Iām looking to switch to a different platform that can handle this very basic task does anyone have suggestions?
The Asana forum is not the right place to ask for Asana alternative 
I often upload tasks and to work around this I have formulas built into spreadsheets to calculate the due dates so that I donāt have to manually assign everything based on a goal dateā¦ Ironically most of us event planners, project managers, etc. back into due dates for tasks and subtasks ā this functionality would be huge!!! Imagine if you could create a template for regular deliverables and only have to enter the ultimate due date!
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Good points @Kayla_Paulson. Welcome to the community! 
I have a recurring master task with several subtasks. When the master task is completed, Asana creates the next recurrence for the master task and updates the due date.
However all the subtasks are recreated with their original due dates instead of bumping it by a week like the master task.
How is this still a problem all these years later? Do I need to switch to a different project management software?
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