
Update: Comments are now locked on this thread. If you have questions, please ask in them in the ArcGIS Utility Network Questions community.
The Migration toolset is a new set of tools designed to migrate network data stored in a geodatabase to the new utility network dataset You can read more about these tools in the Introducing the utility network migration toolset article.
The tools will be officially released as part of the ArcGIS Pro 3.5 release; however, the tools are being made available in a standalone format ahead of this release to support customers who use ArcGIS Pro 3.3.

Screenshot of the Utility Network Migration toolbox for ArcGIS Pro 3.3
You can download the tools along with the help documentation for the tools using the link at the bottom of this post.
Additional resources
Over the next two weeks we will be publishing articles describing how to use these tools and make use of the models they product. If you subscribe to this page, you can be notified every time we make a change.
Electric
Gas and Pipeline
Water
Wastewater/Stormwater
You can refer back to this page later using the following QR code.

UtilityNetworkMigration3.3.1.zip