Hi Anthony, to quote the documentation : The Apply Asset Package applies the domain network(s), related layers, related tables, and properties of a utility network to an existing utility network dataset. This tool is additive. When run against a configured utility network, only the additions will be applied. Existing properties are not removed or changed. So if you apply the asset package v4 on a utility network configured with the asset package v3, only the new functionality will be add to your network, you don't need to redo everything
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