I am considering buying todoist pro and need to know if I will be able to import my current extensive task listing?
It depends. We do have an option to export and import task lists, but they use a specially formatted TXT file meant to serve as a way to create task templates from Todoist. You could make a TXT file with a list of tasks and each line in this file would be converted to a task, but without any property.
We will consider adding importing options from known standard formats in the future.
Any update on adding importing options?
We can only still import text files for now. You can view this video if you're wondering how that works: http://www.youtube.com/watch?v=_Rl_CLGY_3o