TL;DR
There should be a button in the blueprint library to export the entire contents as a string, or to save it to a file using the "exchange blueprint string" format.What ?
Have you ever accidentally deleted a blueprint book you cared about and lost a ton of work? Have you ever made a stupid change that can't be undone? Has the Steam Cloud ever clobbered your blueprint library after checking/unchecking the "enable blueprint library cloud sync" option?We should be able to backup and restore our blueprint library in-game to and from a text file at any time, directly from the blueprint menu.