In MainPanel.scroll_frame:InsertEntry(): Added "parent_entry" parameter - assigns the parent to the new entry, and assigns the entry as a child.

diff --git a/Frame.lua b/Frame.lua
index e746e85..fa57f27 100644
--- a/Frame.lua
+++ b/Frame.lua
@@ -2631,11 +2631,21 @@ do
 	-- necessary to ensure each is counted only once.
 	local recipe_registry = {}

-	function MainPanel.scroll_frame:InsertEntry(entry, entry_index, entry_type, entry_expanded, expand_acquires)
+	function MainPanel.scroll_frame:InsertEntry(entry, parent_entry, entry_index, entry_type, entry_expanded, expand_acquires)
 		local insert_index = entry_index

 		entry.type = entry_type

+		if parent_entry then
+			entry.parent = parent_entry
+			parent_entry.children = parent_entry.children or {}
+
+			table.insert(parent_entry.children, entry)
+
+		elseif entry.type ~= "header" then
+			addon:Debug("Non-header entry without a parent: %s - %s", entry.type, entry.text)
+		end
+
 		-- If we have acquire information for this entry, push the data table into the list
 		-- and start processing the acquires.
 		if expand_acquires then