diff --git a/src/Fields/BlueprintRepository.php b/src/Fields/BlueprintRepository.php
index f899460d99..05a76d5f10 100644
--- a/src/Fields/BlueprintRepository.php
+++ b/src/Fields/BlueprintRepository.php
@@ -239,20 +239,16 @@ protected function filesIn($namespace)
                 $directory = "{$this->additionalNamespaces[$namespace]}";
             }
 
-            $files = File::withAbsolutePaths()->getFilesByType($directory, 'yaml');
+            $files = File::withAbsolutePaths()
+                ->getFilesByType($directory, 'yaml')
+                ->mapWithKeys(fn ($path) => [Str::after($path, $directory.'/') => $path]);
 
-            if ($files->isNotEmpty() && File::exists($overrideDir = $this->directory.'/vendor/'.$namespaceDir)) {
-                $overrides = File::withAbsolutePaths()->getFilesByType($overrideDir, 'yaml');
+            if (File::exists($directory = $this->directory.'/vendor/'.$namespaceDir)) {
+                $overrides = File::withAbsolutePaths()
+                    ->getFilesByType($directory, 'yaml')
+                    ->mapWithKeys(fn ($path) => [Str::after($path, $directory.'/') => $path]);
 
-                $files = $files->map(function ($path) use ($overrides, $overrideDir, $directory) {
-                    $filename = str($path)->after($directory.'/');
-
-                    if ($overrides->contains($overridePath = $overrideDir.'/'.$filename)) {
-                        return $overridePath;
-                    }
-
-                    return $path;
-                });
+                $files = $files->merge($overrides)->values();
             }
 
             return $files;
diff --git a/tests/Fields/BlueprintRepositoryTest.php b/tests/Fields/BlueprintRepositoryTest.php
index beb3be3eb8..a7004a74cd 100644
--- a/tests/Fields/BlueprintRepositoryTest.php
+++ b/tests/Fields/BlueprintRepositoryTest.php
@@ -291,6 +291,7 @@ public function it_returns_empty_collection_if_directory_doesnt_exist()
     {
         File::shouldReceive('withAbsolutePaths')->once()->andReturnSelf();
         File::shouldReceive('getFilesByType')->with('/path/to/resources/blueprints/test', 'yaml')->once()->andReturn(new FileCollection);
+        File::shouldReceive('exists')->with('/path/to/resources/blueprints/vendor/test')->once()->andReturnFalse();
 
         $all = $this->repo->in('test');
 
@@ -337,11 +338,42 @@ public function it_gets_blueprints_in_a_custom_namespace_with_overrides()
         File::shouldReceive('getFilesByType')->with($overrideDir, 'yaml')->once()->andReturn(
             new FileCollection([
                 $overrideDir.'/second.yaml',
-                $overrideDir.'/third.yaml', // This one exists as an override but since there's no original it will be ignored. This behavior is up for debate.
+                $overrideDir.'/third.yaml',
             ])
         );
         File::shouldReceive('get')->with($dir.'/first.yaml')->once()->andReturn('title: First Blueprint');
         File::shouldReceive('get')->with($overrideDir.'/second.yaml')->once()->andReturn('title: Overridden Second Blueprint');
+        File::shouldReceive('get')->with($overrideDir.'/third.yaml')->once()->andReturn('title: Third Blueprint only in overrides');
+
+        $this->repo->addNamespace('custom', $dir);
+
+        $blueprints = $this->repo->in('custom');
+
+        $this->assertInstanceOf(Collection::class, $blueprints);
+        $this->assertCount(3, $blueprints);
+        $this->assertEveryItemIsInstanceOf(Blueprint::class, $blueprints);
+        $this->assertEquals(['first', 'second', 'third'], $blueprints->keys()->all());
+        $this->assertEquals(['first', 'second', 'third'], $blueprints->map->handle()->values()->all());
+        $this->assertEquals(['custom', 'custom', 'custom'], $blueprints->map->namespace()->values()->all());
+        $this->assertEquals(['First Blueprint', 'Overridden Second Blueprint', 'Third Blueprint only in overrides'], $blueprints->map->title()->values()->all());
+    }
+
+    #[Test]
+    public function it_gets_blueprints_in_a_custom_namespace_where_there_are_no_original_files_but_only_overrides()
+    {
+        File::shouldReceive('withAbsolutePaths')->twice()->andReturnSelf();
+        $dir = '/path/to/custom';
+        $overrideDir = '/path/to/resources/blueprints/vendor/custom';
+        File::shouldReceive('exists')->with($overrideDir)->andReturnTrue();
+        File::shouldReceive('getFilesByType')->with($dir, 'yaml')->once()->andReturn(new FileCollection);
+        File::shouldReceive('getFilesByType')->with($overrideDir, 'yaml')->once()->andReturn(
+            new FileCollection([
+                $overrideDir.'/first.yaml',
+                $overrideDir.'/second.yaml',
+            ])
+        );
+        File::shouldReceive('get')->with($overrideDir.'/first.yaml')->once()->andReturn('title: First Blueprint only in overrides');
+        File::shouldReceive('get')->with($overrideDir.'/second.yaml')->once()->andReturn('title: Second Blueprint only in overrides');
 
         $this->repo->addNamespace('custom', $dir);
 
@@ -353,7 +385,7 @@ public function it_gets_blueprints_in_a_custom_namespace_with_overrides()
         $this->assertEquals(['first', 'second'], $blueprints->keys()->all());
         $this->assertEquals(['first', 'second'], $blueprints->map->handle()->values()->all());
         $this->assertEquals(['custom', 'custom'], $blueprints->map->namespace()->values()->all());
-        $this->assertEquals(['First Blueprint', 'Overridden Second Blueprint'], $blueprints->map->title()->values()->all());
+        $this->assertEquals(['First Blueprint only in overrides', 'Second Blueprint only in overrides'], $blueprints->map->title()->values()->all());
     }
 
     #[Test]