I want to attach my Trello account to a different Atlassian account, possible?

[rasik chahar]

I want to transfer my Trello account to a a different Atlassian account, is it possible? if not, why?

[Michael Pryor]

Have you already merged them? If so I don’t think you can do anything. But if not I think just making your trello email match the atlassian account email and then going through the merge process will work. 

[Fabienne Gerhard]

Hi @rasik chahar 

welcome to this wonderful community

There is an how-to article and special support link for transferring whole boards on Trello site! It's a step-by-step description how to make it.

Hope this helps you!