Currently, the Release Template for Phases and Milestones only applies to new releases created and there is no way to apply a Release Template to an existing release, or to update an existing release with a new/updated Release Template. This would be extremely helpful, as we have created our release Road Map, but are still defining the Phases and Milestones for our processes.
|Release time frame|
As described, the Release template only applies to newly created releases. One potential workaround would be to add a new release, move your features to the newly created release (with your new release template), and remove the old release.
Applying templates to existing releases is not currently planned on our roadmap, but we will continue to monitor customer feedback here.