Fix optimised import path buffering events without flush

osu.Game/Database/ArchiveModelManager.cs

@@ -353,8 +353,6 @@ public virtual async Task<TModel> Import(TModel item, ArchiveReader archive = nu
         {
             cancellationToken.ThrowIfCancellationRequested();
 
-            delayEvents();
-
             bool checkedExisting = false;
             TModel existing = null;
 
@@ -394,6 +392,8 @@ void rollback()
                 }
             }
 
+            delayEvents();
+
             try
             {
                 LogForModel(item, @"Beginning import...");