WowAce

Trial of Valor is showing up in the middle of Emerald Nightmare.

It's just a sugestion, but maybe can add in addon (im not to familiar with LUA so sorry if code is bit bad). As i did understand problem is that cant ipair RaidData so i did make modificantion in my addon:
main.lua

function addon:SortButtonOrder(DungeonAmountFunc, DungeonInfoFunc)

--max dungeon count in data
local MaxData = 0
for i, v in pairs(self.raidData) do
MaxData = MaxData + 1
end

--shift for case if dungeon is not in data
local NoDataShift = 1

--order of LFR to create
local LFROrder = {}

--get all LFR from wow
for i = 1, DungeonAmountFunc() do

local id = DungeonInfoFunc(i)
local isAvailable, isAvailableToPlayer = IsLFGDungeonJoinable(id)

-- if can't join it no point in checking its position
if isAvailable and isAvailableToPlayer then

local Poz = nil

--look for instance position in data table
for add_id, add_v in pairs(self.raidData) do
if add_id == id then
Poz = add_v.sortOrder
break
end
end

--if didn't find instance asign position in the end of list
if Poz == nil then
Poz = MaxData + NoDataShift
NoDataShift = NoDataShift + 1
end

LFROrder[Poz] = i

end
end

-- create position array
SortKey = {}
for i in pairs(LFROrder) do
table.insert(SortKey, i)
end

-- sort positions
table.sort(SortKey)

-- create sorted array for raid ID
SortedID = {}
for _, i in ipairs(SortKey) do
table.insert(SortedID, LFROrder[i])
end

return SortedID

end

function addon:CreateButtons(parentFrame, DungeonAmountFunc, DungeonInfoFunc, SetDropdownMenuFunc)

...

SortedID = self:SortButtonOrder(DungeonAmountFunc, DungeonInfoFunc)

--for i = 1, DungeonAmountFunc() do
for _, i in ipairs(SortedID) do

...

end

 raid_data.lua

...

-- Emerald Nightmare LFR
[1287] = { numEncounters = 3, startFrom = 1 , sortOrder = 30}, -- Darkbough
[1288] = { numEncounters = 3, startFrom = 1 , sortOrder = 31}, -- Tormented Guardians 4
[1289] = { numEncounters = 1, startFrom = 1 , sortOrder = 32}, -- Rift of Aln 7

-- Trial of Valor LFR
[1411] = { numEncounters = 3, startFrom = 1 , sortOrder = 33}, -- Trial of Valor

-- Nighthold
[1290] = { numEncounters = 3, startFrom = 1 , sortOrder = 34}, -- Arcing Aqueducts
[1291] = { numEncounters = 3, startFrom = 1 , sortOrder = 35}, -- Royal Athenaeum 4
[1292] = { numEncounters = 3, startFrom = 1 , sortOrder = 36}, -- Nightspire 7
[1293] = { numEncounters = 1, startFrom = 1 , sortOrder = 37}, -- Betrayers Rise 10

It fixed itself at some point.