Project roles when using a template to convert a task into a project

I have project roles set up in a template, with the hopes that when a project is created using that template, I can quickly replace those role placeholders with assignees. However, it does not seem to work if you use a template to convert a task into a project. It only works if you use the template directly to create a project. This does not work with our project intake workflow, where requests are submitted and then those requests (tasks) are converted into projects.