Known Limitations

Tasks can be created as a regular task or a milestone. Asana’s other task types are not offered: approval keeps its status in sync with the task’s completion, which needs handling of its own, and a custom task type cannot be given its type at creation time — the Asana API only accepts that on an update — so a task created that way would have no type at all.

As of now the plugin cannot properly map to the “Timer” custom field. Under the hood the API treats it as a “Date” custom field and it will show up as such in the custom field mapping section. But the actual mapping will try to do the mapping as if for a regular “Date” custom field. It won’t cause any errors but you won’t achieve the desired mapping.