Fix optimised import path buffering events without flush

osu.Game/Database/ArchiveModelManager.cs

@@ -353,8 +353,6 @@ namespace osu.Game.Database
         {
             cancellationToken.ThrowIfCancellationRequested();
 
-            delayEvents();
-
             bool checkedExisting = false;
             TModel existing = null;
 
@@ -394,6 +392,8 @@ namespace osu.Game.Database
                 }
             }
 
+            delayEvents();
+
             try
             {
                 LogForModel(item, @"Beginning import...");