Tasks added to a template after the schedule has already been created do not show up

In Task Manager, we created a template, imported tasks, created a schedule and set the status of the schedule to open. We imported 28 tasks and all show up in the Worklist. However, when we try to add new tasks to this template (either manually or import) they can be added successfully to the template, but do not show up in the worklist. This has happened with multiple tries. The only thing that seems to work is deleting the schedule and creating a new one/starting the process over which we do not want to do. Ideas on how to resolve?