Forge stopped working

So we can’t reload into a forge map that we finished. It just spawns us under the map where we can’t move. We were able to open it in custom games and machinima, but we still need to go in forge to finish adding vehicles, weapon spawns, etc. It might also help to know that the map loaded fine at around 800 objects but when we reloaded after adding more it stopped workng. Anyone know a fix or if 343i have any plans on fixing this.