Active File Feature Definitions- Write Back to Library

Within my active design file, I have assembled some frequently used Feature Definitions and collected them into their own "New Category" Feature Definition folder. I have also copied some Feature Definitions and Applied a "_Right" or _"Left" to some of them to specify sides for use with my templates. 

How do I write these custom feature definitions and this new "collection folder" back to my DGNLIB from within the current Design File, for use within my other associated design files? Some of these Features have been created within a Geometry File and are for use within a Corridor File. Due to the custom folder, the path is now different on the Feature Definitions that I cut and pasted into my new category folder and can't be used within my templates now.