A puzzle. I have some missing textures that cropped up after trying a migration from NMM to Mod Organizer. In-game, all of the objects with missing textures ID as 000xxxxx, so this should mean that they are vanilla objects that get their textures from the vanilla files or from the HD texture packs. Accordingly, I deleted Skyrim.esm and Skyrim.bsa, as well as all of the HD texture packs (both .bsas and .esms) and forced Steam to redownload them. To be on the extra safe side, I also redownloaded and reinstalled the only two mods that might affect these kinds of textures: SMIM and Skyrim HD 2K. The missing textures are standard static items like campfire stones, wooden stakes, static pottery, mead vats and that kind of thing, so those are the only files that I can think of that would contain or affect the missing textures. And I got exactly bupkis (nothing) from the effort. I'm almost certain that I'm missing something painfully obvious on this issue. Can anyone clue me in?

Second issue has to do with Steam validation in general. To force the redownload/reinstall of the files, I deleted specific files from my Data directory, but I also copied out all of the Bethesda .esms that I cleaned with TESVEdit in order to save myself the hassle of having to go clean them again. I copied the cleaned .esms back into the directory after Steam finished downloading. But the puzzle is this: there were four cleaned .esms, plus the deleted Skyrim.bsa. By my count that's five files that Steam would need to reacquire, but it reacquired six. Same for the texture packs: deleted six files (3 .esms and 3 .bsas) and copied out four cleaned .esms for the DLCs (Dawnguard, Dragonborn, Hearthfire, and Update), but twelve files got reacquired. Something's not adding up on this and I'm looking for a clue (yeah, color me clueless). Anyone know what Steam's grabbing?

Edit: most recent attempt at fixing. Four cleaned .esms, plus Skyrim.esm, and Skyrim.bsa (that's six files), but seven got reacquired.