I am happy to do a one time transfer though.
Yes, you would just need to export your data from Asana into CSV files and then import each file into Trello.
Unfortunately, we don’t have direct Asana to Trello connector at the moment, but I will keep an eye on our integrations and post here as we have an update on adding this!
You can use Import2 Wizard to export data from Asana into CSV.
Here is more info on how to do mappings importing into Trello.
Just wanted to give an update that now we have a connector to make direct Asana to Trello sync. You can set it up here: https://appw.import2.com/integrations/new, and we will be in touch with you to configure which objects and fields need to be synced between Asana and Trello, and make sure that integration is working as expected.