Sync parent values to subitems on every change

Sync parent values to subitems on every change

TL;DR: When a column changes on a parent item, automatically push that value to every subitem's matching column. Keeps existing subitems in sync — not just newly created ones. The #2 most-used Subitem Automation in the app — used by 16% of all accounts.

What this does

Recipe: "When column changes on an item, change its subitems column to the same value."
Whenever the parent's chosen column changes value, every subitem's matching column updates to that same value. Existing subitems are updated; new subitems aren't covered by this recipe (use the on-creation variant for that).
Works for most column types: Status, Date, People, Connect, Numbers, Text, Dropdown, and more.

When to use it

  • Parent and subitems must always share a value (status, owner, priority, due date)
  • You want changes on the parent to propagate to every existing subitem in real time
  • Cross-team workflows where parent-level decisions sync to every task
  • Project-status workflows where the parent drives the team's view of every subitem
If you only want NEW subitems to inherit a parent value (without affecting existing ones), use  Sync parent values to subitems on creation⁠  (the on-creation variant) instead. For all 9 sync variants, see  Sync values between parent & subitem⁠ .

Before you start

  • The same column type on both parent and subitem (Status → Status, Date → Date, etc.)
  • Column names don't need to match — you map them in the automation
  • Read-only columns (Mirror, Formula, Last updated) can't be the destination

Set it up (2 minutes)



I. Configure the underlined fields

Field
What to select
Example
Parent column
The source — the column whose changes trigger the sync
Status
Subitem column
The destination — must match the parent's type
Status


II. Access the Automation Center

1. Click Automate in the top navigation bar of your board.
2. Type subitem automations into the search bar to quickly find the app.
3. Select the Subitem - All automations app card from the results.

III. Configure the Subitem Sync Rule

4. Locate the automation template labeled "When column changes on an item, change its subitems' column to the same value" and click Use template.

5. Click the first column placeholder and select the parent item column you'd like to sync from the dropdown menu.

6. Click the second column placeholder and choose the subitem column you'd like to sync to (only a similar column type will show up in the options). This sets the target column that will be automatically updated on the subitems.
While this guide demonstrates syncing the Person column, you can use this exact template to sync Statuses, Dates, Text, or other supported column types.

7. Click Create automation to save and activate your new automation recipe.

IV. Test the Automation

8. Navigate back to your board, change the value of the specific column on the parent item.

9. The new column value will get synced automatically to the subitems in 3-5 seconds.

FAQ

Q: Can I sync other column types besides the Person column?

A: Yes. The "When column changes on an item..." automation template works for many column types, including Status, Date, and Dropdown columns.

Q: Will syncing overwrite existing data on my subitems?

A: Yes. When the parent item's column changes, the automation forces the subitem's column to match that exact value, instantly overwriting whatever assignee or status was previously there.


Common gotchas

  • Fires on every change. If you only want creation-time inheritance, use  Sync parent values to subitems on creation⁠  instead.
  • Updates ALL subitems. No filter — every subitem gets the new value. To filter (only matching status, etc.) see  Smart rules & by-name automations⁠ .
  • Read-only destinations silently fail. Mirror, Formula, and Last-updated columns can't receive synced values.
  • Column type mismatch breaks the automation. You can't sync a Status to a Date column.
  • Loop risk. If you also have a subitem → parent sync on the same column pair, you can create a feedback loop. Test before deploying both directions.

Next up

 Sync parent values to subitems on creation⁠  (the on-creation variant)

Related

  •  Sync values between parent & subitem⁠  (parent landing — see all 9 sync variants)
  •  Sync subitem changes back to the parent⁠  (the reverse direction)
  •  Sync parent values to named subitems on creation⁠  (filtered version — only specific subitem names inherit)

Still stuck?

Email  hello@fantasymedia.io  and we'll help you wire up the right sync.