I could not make changes within automation rule on the Mirrored card

Shoi
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January 25, 2025

Hi, please help me to resolve my case.

I set up an automation rule:

``` when a card is added to list "3 day", remove the due date from the card, set due date in 3 days at 3:00 am, remove all the labels from the card, and add the orange "3 day" label to the card ```
/n
With Normal cards this automation rule works fine, but when I move a mirrored card to the list "3 day", it just turns into the card link instead of changing the due date and the label. 
image.png
I am an admin on both boards, from where the card is mirrored. 

1 answer

1 vote
DiMaggio Tucci
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January 26, 2025

I just tested this, and this worked:

 

 

 

 

 

when a card is moved into list "MY LIST", find a card with link "{cardname}"
...then do the rest of your actions

 

 

This is what it seems to me:

Unlike editing a mirror by hand, where Trello updates the original card and the change is reflected in the mirror, editing a card with Butler seems to edit the MIRROR itself. Since the cards are now different from each other, the mirror is broken and you see the card link, which is (from Trello's point of view) the ACTUAL name of any given "mirror".

So if you want to edit a mirrored card with Butler, you need to first find the original card. Luckily for us, since the card is a mirror, we know that the link to the original card is the name of the card we're editing, so that's really easy!

Trello may change this in a future update since card mirroring is a brand new feature.

Either way, you're better off finding the original card by link in the mirror's name and updating it there; then, you should see the changes reflected on both cards.

You may need some way to distinguish normal cards from mirrors if they are both being added to the same list, and have two different automations to handle each case.

DiMaggio Tucci
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January 26, 2025

Updated answer with automation code

Augusto Lisboa
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January 27, 2025

Hi Shoi, and DiMaggio.

We're tracking this issue, which you can watch over here: https://jira.atlassian.com/browse/TRELLO-927

I have added this thread to this bug as an internal comment for our engineering team to see and reference if needed as well as align priority.

Meanwhile, to avoid the mirrored cards to broken; when you create an automation trigger, you can specify it only works on cards without any role (such as the mirror role). Doing this will allow Mirror Cards to get created without interference from other automations. Let me show you an example:

image-2025-01-22-10-53-17-292.png

This action will only avoid the Mirrored cards to trigger the automation.

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DiMaggio Tucci
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January 27, 2025

@Augusto Lisboa 

 

Great information! Thank you. I also have found that the solution I gave (finding the mirrored card via the link in the name) can really help in the meantime for when you DO want to use automation with the mirror!

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