is it possible to have one way sync between boards?

[Martin Purmensky]

I would like to find out of this scenario is possible:
We have a board "operations"
and a board "supplier"

When a job looks promising, we create a card in the board operations. Clients pays a deposit and we move the card to the board "supplier". Once the supplier completes the job, we move it back to the board "operations" for further processing.

Is it possible to copy every action that happens on the board supplier to the board operations, but not copy the opposite directions? There are some information that our supplier does not need to know, but we need to keep it on hand for processing past production. So the card would have ALL the action during the life of the project in operations, but the manufacturing process would be only in the supplier board.  

[Shikha Verma]

Hi @Martin Purmensky. Yes, it is possible. You can create a Jira Automation rule for this with a trigger, specific condition and then action.
You can also try third-party applications Exalate and Issue Sync Pro to resolve your issue. I personally tried both the apps, and they are easy to use.

[Gaurav Kataria]

Those are Jira applications. For Trello you could use Unito. 

[Martin Purmensky]

Wow. $65 per month is more than we pay for Trello.