Update comment on merging levelled lists

components/esm/loadlevlist.cpp

@@ -24,11 +24,12 @@ void LevelledListBase::load(ESMReader &esm)
         return;
     }
 
-    // TODO: Merge with an existing lists here. This can be done
-    // simply by adding the lists together, making sure that they are
-    // sorted by level. A better way might be to exclude repeated
-    // items. Also, some times we don't want to merge lists, just
-    // overwrite. Figure out a way to give the user this option.
+    // If this levelled list was already loaded by a previous content file,
+    // we overwrite the list. Merging lists should probably be left to external tools,
+    // with the limited amount of information there is in the records, all merging methods
+    // will be flawed in some way. For a proper fix the ESM format would have to be changed
+    // to actually track list changes instead of including the whole list for every file
+    // that does something with that list.
 
     for (size_t i = 0; i < mList.size(); i++)
     {