Using addProject route with newly created task list (template duplication)

[thetwosents]

Having an issue, don't know if API related and wondering if anyone else is having issue. I'm trying to duplicate a list of tasks from one project into a newly created project, and put them in the same order. So far, I am querying from template, creating new project, then creating the tasks in the new project, then using addProject route to update task location with insert_after. The result is the tasks do update location but the wrong location. I can also confirm I am passing the properid of each for insert_after. Any help is appreciated and thanks for the great SDK.