The configuration file for the monitored networks is located the API package.
The networks still using the old witnet price router are marked using legacy: true in the network configuration. The feeds key consists of a map with the default values of the existing price feeds. According to that, the price feeds deployed using the default configuration have been deleted from the network feeds section. If a feed configuration appears in the network feeds, it will overwrite the default configuration.
All the available price feeds in a network called the supportedFeeds method.