I just found a new forge bug that deletes all progress on a forged map!
I have posted this in the Halo 5 forum as well to gather as much attention about this issue as possible!
If your internet goes out while forging it 1) boots you from the map and 2) deletes all progress on the map regardless of saves if you have not quit the map!
I have been working on this map for 4 hours straight and have now lost all the progress I have made! I saved regularly but did not quit out of the map. I still have content of the map from my first save and quit but nothing was saved from the 4 hours I have been forging.
343I You seriously need to fix this bug like ASAP!