Best Answer EssArrBee , 26 March 2014 - 02:45 PM
The tags are not for forwarding new entries, they are for existing items that are changed in some way. Revel means that some items that already exist in the lists are REleveled in some way by having their stats changed. Deleveled means that something is taken away that existed in the list and those changes will not get forwarded from mods that have those items because you will not want those existing items in the lists. That is what Requiem does with it's delev tag, by Deleveling the game and making it much more unique than just having all the same stuff in every container and NPC. New entries are automatically added as new entries in the leveled list and do not need tags. Skyrim.esm doesn't have a tag because it is the original source of the lists. Everything either changes those existing lists or adds new items to those lists.
So tags change existing items, new items are added regardless by the Bashed Patch.Go to the full post