Configuring Fluent NHibernate with an External NHibernate Config File

A while ago I was having issues using configuring fluent NHibernate with an external configuration file. I kept running into the issue of mappings not being registered. I was finally able to get it working appropriately and thought I would share my solution. The key is to configure the normal mappings first and then pass that configuration in when configuring fluent NHibernate.

string configFile = "hibernate.cfg.xml";

//setup the normal map configuration
Configuration normalConfig = new Configuration().Configure(configFile);

//setup the fluent map configuration
m => m.FluentMappings
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