diff --git a/osu.Game.Tests/Database/BeatmapImporterTests.cs b/osu.Game.Tests/Database/BeatmapImporterTests.cs
index 0546d3e912..56964aa8b2 100644
--- a/osu.Game.Tests/Database/BeatmapImporterTests.cs
+++ b/osu.Game.Tests/Database/BeatmapImporterTests.cs
@@ -702,6 +702,8 @@ namespace osu.Game.Tests.Database
                     var firstImport = await importer.Import(new ImportTask(pathMissingOneBeatmap));
                     Assert.That(firstImport, Is.Not.Null);
 
+                    realm.Run(r => r.Refresh());
+
                     Assert.That(realm.Realm.All<BeatmapSetInfo>().Where(s => !s.DeletePending), Has.Count.EqualTo(1));
                     Assert.That(realm.Realm.All<BeatmapSetInfo>().First(s => !s.DeletePending).Beatmaps, Has.Count.EqualTo(11));
 
@@ -709,6 +711,8 @@ namespace osu.Game.Tests.Database
                     var secondImport = await importer.Import(new ImportTask(pathOriginal));
                     Assert.That(secondImport, Is.Not.Null);
 
+                    realm.Run(r => r.Refresh());
+
                     Assert.That(realm.Realm.All<BeatmapInfo>(), Has.Count.EqualTo(23));
                     Assert.That(realm.Realm.All<BeatmapSetInfo>(), Has.Count.EqualTo(2));
 
diff --git a/osu.Game/IO/MigratableStorage.cs b/osu.Game/IO/MigratableStorage.cs
index 30e74adca4..7cd409c04c 100644
--- a/osu.Game/IO/MigratableStorage.cs
+++ b/osu.Game/IO/MigratableStorage.cs
@@ -96,12 +96,22 @@ namespace osu.Game.IO
             if (!destination.Exists)
                 Directory.CreateDirectory(destination.FullName);
 
-            foreach (System.IO.FileInfo fi in source.GetFiles())
+            foreach (System.IO.FileInfo fileInfo in source.GetFiles())
             {
-                if (topLevelExcludes && IgnoreFiles.Contains(fi.Name))
+                if (topLevelExcludes && IgnoreFiles.Contains(fileInfo.Name))
                     continue;
 
-                AttemptOperation(() => fi.CopyTo(Path.Combine(destination.FullName, fi.Name), true));
+                AttemptOperation(() =>
+                {
+                    fileInfo.Refresh();
+
+                    // A temporary file may have been deleted since the initial GetFiles operation.
+                    // We don't want the whole migration process to fail in such a case.
+                    if (!fileInfo.Exists)
+                        return;
+
+                    fileInfo.CopyTo(Path.Combine(destination.FullName, fileInfo.Name), true);
+                });
             }
 
             foreach (DirectoryInfo dir in source.GetDirectories())