Be sure to use Mod Organizer and TESVEdit and load them in this order: Skyrim.esm Dawnguard.esp Heartfire.esp Dragonborn.esp Unofficial Skyrim Legendary Patch. ... ... Lore Friendly Artifact Rebalance.esp ...your dawnbreaker mod... ... ... Load ONLY this files in TESVEdit RMB click and Apply filter for cleaning Check mod overwrinting Be sure to add all of the the USLEEP changes to LFAR patch, taking care of mantaining the LFAR patch improvements Then check the overwriting of the dawnbreaker and modify at your taste