diff --git a/paperforge/worker/base_views.py b/paperforge/worker/base_views.py
index 7976b527..04c664e6 100644
--- a/paperforge/worker/base_views.py
+++ b/paperforge/worker/base_views.py
@@ -263,7 +263,7 @@ def _inject_widths_into_block(text: str, widths: dict[str, int]) -> str:
     return "\n".join(result)
 
 
-def merge_base_views(existing_content: str | None, new_views: list[dict]) -> str:
+def merge_base_views(existing_content: str | None, new_views: list[dict], folder_filter: str = "") -> str:
     """Incrementally merge standard PaperForge views into an existing .base file.
 
     Strategy:
@@ -277,6 +277,7 @@ def merge_base_views(existing_content: str | None, new_views: list[dict]) -> str
     Args:
         existing_content: Raw text of existing .base file (or None/empty for fresh generation).
         new_views: List of 8 view dicts from build_base_views().
+        folder_filter: Vault-relative folder path for file.inFolder() (used for fresh generation).
 
     Returns:
         Merged .base file content with PaperForge views updated, user views preserved.
@@ -315,7 +316,7 @@ def merge_base_views(existing_content: str | None, new_views: list[dict]) -> str
         fresh_views_yaml = _render_views_section(new_views)
         return f"""filters:
   and:
-    - file.inFolder("{new_views[0]["name"]}")
+    - file.inFolder("{folder_filter}")
     - file.ext == "md"
     - !zotero_key.isEmpty()
 {PROPERTIES_YAML}
diff --git a/tests/test_base_preservation.py b/tests/test_base_preservation.py
index 7498402b..42128d7b 100644
--- a/tests/test_base_preservation.py
+++ b/tests/test_base_preservation.py
@@ -234,7 +234,7 @@ views:
       - title
 """
         views = build_base_views("骨科")
-        result = merge_base_views(existing, views)
+        result = merge_base_views(existing, views, folder_filter="Resources/Literature/骨科")
 
         assert "My Custom View" in result, "User view was lost"
         assert "推荐分析" in result
@@ -243,7 +243,7 @@ views:
     def test_merge_base_views_first_run_generates_fresh(self):
         """merge_base_views with no existing content generates fresh YAML."""
         views = build_base_views("骨科")
-        result = merge_base_views(None, views)
+        result = merge_base_views(None, views, folder_filter="Resources/Literature/骨科")
 
         assert "views:" in result
         assert "type: table" in result
diff --git a/tests/test_base_views.py b/tests/test_base_views.py
index af307ad3..9cf25a85 100644
--- a/tests/test_base_views.py
+++ b/tests/test_base_views.py
@@ -79,7 +79,7 @@ class TestBuildBaseViews:
 
     def test_properties_yaml_updated(self):
         from paperforge.worker.base_views import merge_base_views
-        fresh = merge_base_views(None, build_base_views("骨科"))
+        fresh = merge_base_views(None, build_base_views("骨科"), folder_filter="Resources/Literature/骨科")
         assert "lifecycle:" not in fresh
         assert "maturity_level:" not in fresh
         assert "next_step:" not in fresh