See the [Ember Octane Edition Upgrade Tasks](https://docs.google.com/document/d/1anyhCyMFSPvJ761zXX2J0YMN4FRCUgeqOpo9aPSH6nI/edit?tab=t.0#bookmark=id.7e5qbrutovk6) in the [Technical Spec](https://docs.google.com/document/d/1anyhCyMFSPvJ761zXX2J0YMN4FRCUgeqOpo9aPSH6nI/edit?usp=sharing). See Implementation Notes.