diff --git a/TradeSkillMaster_AuctionDB/Modules/ChannelSync.lua b/TradeSkillMaster_AuctionDB/Modules/ChannelSync.lua
index 76604bf..6cfa6a8 100644
--- a/TradeSkillMaster_AuctionDB/Modules/ChannelSync.lua
+++ b/TradeSkillMaster_AuctionDB/Modules/ChannelSync.lua
@@ -104,24 +104,21 @@ local function DecodePayload(encoded)
 	return payload
 end
 
-function ChannelSync:BroadcastScanData(scanType)
+function ChannelSync:BroadcastScanData(scanType, items)
 	if scanType ~= "Full" and scanType ~= "GetAll" and scanType ~= "Group" and scanType ~= "Search" then
 		return
 	end
 	if TSM.processingData then
 		TSMAPI:CreateTimeDelay("auctionDBChannelSyncBroadcast", 0.5, function()
-			ChannelSync:BroadcastScanData(scanType)
+			ChannelSync:BroadcastScanData(scanType, items)
 		end)
 		return
 	end
 	EnsureChannel()
 	if not private.channelName or not private.channelId then return end
 
-	TSM:Serialize()
-	local payload = {
-		scanTime = TSM.db.realm.lastCompleteScan,
-		scanData = TSM.db.realm.scanData,
-	}
+	local payload = ChannelSync:BuildPayload(scanType, items)
+	if not payload then return end
 	local encoded = EncodePayload(payload)
 	if not encoded then return end
 
@@ -141,26 +138,93 @@ function ChannelSync:BroadcastScanData(scanType)
 	end
 end
 
+function ChannelSync:BuildPayload(scanType, items)
+	local itemIDs = {}
+	if items then
+		if #items > 0 then
+			for _, itemString in ipairs(items) do
+				local itemID = TSMAPI:GetItemID(itemString)
+				if itemID then
+					itemIDs[itemID] = true
+				end
+			end
+		else
+			for itemString in pairs(items) do
+				local itemID = TSMAPI:GetItemID(itemString)
+				if itemID then
+					itemIDs[itemID] = true
+				end
+			end
+		end
+	else
+		local scanTime = TSM.db.realm.lastCompleteScan
+		for itemID in pairs(TSM.data) do
+			TSM:DecodeItemData(itemID)
+			if TSM.data[itemID].lastScan == scanTime then
+				itemIDs[itemID] = true
+			end
+		end
+	end
+
+	local payloadItems = {}
+	for itemID in pairs(itemIDs) do
+		local data = TSM.data[itemID]
+		if data then
+			TSM:EncodeItemData(itemID)
+			if data.encoded then
+				payloadItems[itemID] = data.encoded
+			end
+		end
+	end
+	if not next(payloadItems) then return end
+
+	return {
+		v = 1,
+		scanType = scanType,
+		scanTime = TSM.db.realm.lastCompleteScan,
+		items = payloadItems,
+	}
+end
+
+local function DecodeIncomingItem(itemID, encoded)
+	local tmp = {}
+	tmp[itemID] = {encoded = encoded}
+	TSM:DecodeItemData(itemID, tmp)
+	return tmp[itemID]
+end
+
 local function MergeIncomingData(payload, sender)
-	if type(payload) ~= "table" or type(payload.scanData) ~= "string" then return end
+	if type(payload) ~= "table" then return end
 
 	local incoming = {}
-	TSM:Deserialize(payload.scanData, incoming, true)
+	if payload.items then
+		incoming = payload.items
+	elseif type(payload.scanData) == "string" then
+		TSM:Deserialize(payload.scanData, incoming, true)
+	else
+		return
+	end
 	local updated = 0
 	local lastItemID
 	for itemID, data in pairs(incoming) do
-		local existing = TSM.data[itemID]
-		if existing then
-			TSM:DecodeItemData(itemID)
-			if data.lastScan and (not existing.lastScan or data.lastScan > existing.lastScan) then
-				TSM.data[itemID] = data
+		local incomingData = data
+		if payload.items then
+			incomingData = DecodeIncomingItem(itemID, data)
+		end
+		if incomingData then
+			local existing = TSM.data[itemID]
+			if existing then
+				TSM:DecodeItemData(itemID)
+				if incomingData.lastScan and (not existing.lastScan or incomingData.lastScan > existing.lastScan) then
+					TSM.data[itemID] = incomingData
+					updated = updated + 1
+					lastItemID = itemID
+				end
+			else
+				TSM.data[itemID] = incomingData
 				updated = updated + 1
 				lastItemID = itemID
 			end
-		else
-			TSM.data[itemID] = data
-			updated = updated + 1
-			lastItemID = itemID
 		end
 	end
 
diff --git a/TradeSkillMaster_AuctionDB/Modules/Scanning.lua b/TradeSkillMaster_AuctionDB/Modules/Scanning.lua
index 353a86b..ae60f55 100644
--- a/TradeSkillMaster_AuctionDB/Modules/Scanning.lua
+++ b/TradeSkillMaster_AuctionDB/Modules/Scanning.lua
@@ -580,7 +580,7 @@ function Scan:ProcessScanData(scanData)
 	-- Process the collected auction data.
 	TSM.Data:ProcessData(data, Scan.groupItems, verifyNewAlgorithm)
 	if TSM.ChannelSync then
-		TSM.ChannelSync:BroadcastScanData(Scan.isScanning)
+		TSM.ChannelSync:BroadcastScanData(Scan.isScanning, Scan.groupItems)
 	end
 end
 
diff --git a/TradeSkillMaster_AuctionDB/Modules/data.lua b/TradeSkillMaster_AuctionDB/Modules/data.lua
index 2430ea3..36b9656 100644
--- a/TradeSkillMaster_AuctionDB/Modules/data.lua
+++ b/TradeSkillMaster_AuctionDB/Modules/data.lua
@@ -171,7 +171,7 @@ function Data:ProcessExternalScanData(scanData, groupItems, scanTime)
 	if not next(data) then return end
 	Data:ProcessData(data, groupSet, nil, scanTime or time(), true)
 	if TSM.ChannelSync then
-		TSM.ChannelSync:BroadcastScanData("Search")
+		TSM.ChannelSync:BroadcastScanData("Search", groupSet)
 	end
 end