[Baertram]

Just a note about crafting functions which were global and removed now.
Old and removed:

function ZO_CraftingUtils_IsTraitAppliedToWeapons(traitType)
    local traitCategory = GetItemTraitTypeCategory(traitType)
    return traitCategory == ITEM_TRAIT_TYPE_CATEGORY_WEAPON
end
 
function ZO_CraftingUtils_IsTraitAppliedToArmor(traitType)
    local traitCategory = GetItemTraitTypeCategory(traitType)
    return traitCategory == ITEM_TRAIT_TYPE_CATEGORY_ARMOR
end

Replaced by:
ZO_CraftingUtils_GetSmithingFilterFromTrait(smithingResearchLineTraitInfo)

-> See file
/esoui/ingame/crafting/smithingresearch_shared.lua
-> function ZO_SharedSmithingResearch:Refresh()

e.g. used like this:
local expectedTypeFilter = ZO_CraftingUtils_GetSmithingFilterFromTrait(GetSmithingResearchLineTraitInfo(craftingType, researchLineIndex, 1))