Load blueprint strings created in Factorio 0.14 and earlier
Mods introducing new content into the game.
Change blueprint behavior.
I'm using Factorio 0.13.17 and blueprints such as http://factorioblueprints.com/view/rwuzmf9YiugL2Wg8p do not seem to be loaded correctly. It mainly seems to be splitters that get placed incorrectly.