Bulk Edit Plans with Branches to Update SSH Key all at once

I would like for Bamboo to have the ability to Bulk Edit All Plans with their branches, so that I can update the SSH Key all at once, instead of having to manually go into each plan and each branch to do this.

This process alone already takes me close to 5 hours given we have many builds and branches, so if there's an easier way to update SSH keys for all plans/branches that would be great.