We are currently on Version 11.1 Build 11125

I've created a checklist and added it to a template. However when I take a request that has already been created and change the template, it doesn't bring the checklist with it.

And I'm also not able to add the checklist to any request like I would be able to with a task. There is no option to Add New or associate with the request. Is this by design?  The only way I seem to be able to use the checklist is by creating a new request with the template that is associated with it.