On Azure DevOps Server 2019, I wish to customize my backlogs and boards to add new levels and WITs, as described here.
Doing so requires the new Inherited process model, however, and my collection was created some years prior to the model's introduction (I've gone through three upgrades in the time since). The model must be selected at collection creation; it's not possible to switch between the two after the fact.
It appears I must create a new collection, and then migrate all of my data (Work Items, Repos, Pipelines, etc.). Naturally, I need to preserve all internal timestamps.
Is this possible, and if so, how is it accomplished?