ArcFM Locator and Feeder Manager 2.0
By default, joined data used by Feeder Manager 2.0 do not appear in the ArcFM Locator. The feeder information fields appear, but instead of data contain a '0' or 'Feeder Tracing Disabled' message. This is due to the feeder tracing operations required when locating on features that participate in a network configured for Feeder Manager 2.0.
If you're okay with the performance cost of doing so, you can enable the appearance and participation of Feeder Manager 2.0 joined data in the Locator. Click Options in the Locator tool and check Return FM2.0 Data.
Note that the Locator will display whatever feeder data currently reside in the Feeder Manager 2.0 cache. That means that if the cache is currently populated with feeder data relevant to the Locate operation you're conducting, you will see data in the Feeder Manager 2.0 fields even when the option to Return FM2.0 Data is turned off.
Do not attempt to use the ArcFM Locator tool to search based on feeder information fields. Instead, use the Find Feeder tool, which was designed expressly for that purpose.