diff --git a/changed_files.json b/changed_files.json
index 2baefa4e..b132985d 100644
--- a/changed_files.json
+++ b/changed_files.json
@@ -1,3 +1,5 @@
 [
-  "R/ARMA.R"
+  "R/Partition_Map.R",
+  "src/NNS_part.cpp",
+  "tests/testthat/test_NNS_reg_infinite.R"
 ]
diff --git a/sync/last_live_r_parity_report.md b/sync/last_live_r_parity_report.md
index 09eb22d7..b5d385e9 100644
--- a/sync/last_live_r_parity_report.md
+++ b/sync/last_live_r_parity_report.md
@@ -3,12 +3,17 @@
 - Plan: `sync/last_r_api_plan.json`
 - R checkout: `upstream/NNS`
 - Fresh cache requested: `False`
-- Skip install: `False`
-- Live R recompute: `True`
+- Skip install: `True`
+- Live R recompute: `False`
 
-## Result: live R parity diverged
+## Result: manual review required
 
-Mapped parity tests recomputed every R value from the freshly installed live R NNS and the Python implementation did not match. Public Python behavior differs from live R at the recorded commit.
+The plan reports unmapped R files. A human must extend `sync/r_api_map.json` before automated parity can run:
 
-Failing command: `/opt/hostedtoolcache/Python/3.11.15/x64/bin/python -m pytest -q -n 0 tests/parity/test_practical_examples.py tests/parity/test_r13_smoke.py`
-Exit status: `1`
+- `R/Partition_Map.R`
+
+## Workflow step outcome
+
+- `run_live_r_parity_for_changed_api.py` step outcome: `failure`
+- Fresh cache requested: `false`
+- DESCRIPTION changed: `false`
diff --git a/sync/last_r_api_inspection.md b/sync/last_r_api_inspection.md
index 79defb7a..b4ad3913 100644
--- a/sync/last_r_api_inspection.md
+++ b/sync/last_r_api_inspection.md
@@ -2,25 +2,28 @@
 
 ## Changed files
 
-- `R/ARMA.R`
+- `R/Partition_Map.R`
+- `src/NNS_part.cpp`
+- `tests/testthat/test_NNS_reg_infinite.R`
 
 ## Affected Python modules
 
-- `src/nns/arma.py`
+- None mapped
 
 ## Parity tests to run
 
-- `tests/parity/test_practical_examples.py`
-- `tests/parity/test_r13_smoke.py`
+- None mapped
 
 ## Cache scope
 
-- `NNS.ARMA`
-- `NNS.ARMA.optim`
-- `NNS.VAR`
+- None mapped
 
 ## Required actions
 
 - Fresh cache required: `False`
 - Export review required: `False`
-- Unmapped R files present: `False`
+- Unmapped R files present: `True`
+
+## Unmapped R files
+
+- `R/Partition_Map.R`
diff --git a/sync/last_r_api_plan.json b/sync/last_r_api_plan.json
index 6fef8d57..d024b65d 100644
--- a/sync/last_r_api_plan.json
+++ b/sync/last_r_api_plan.json
@@ -1,22 +1,17 @@
 {
   "changed_files": [
-    "R/ARMA.R"
-  ],
-  "affected_python_modules": [
-    "src/nns/arma.py"
-  ],
-  "parity_tests": [
-    "tests/parity/test_practical_examples.py",
-    "tests/parity/test_r13_smoke.py"
-  ],
-  "cache_scope": [
-    "NNS.ARMA",
-    "NNS.ARMA.optim",
-    "NNS.VAR"
+    "R/Partition_Map.R",
+    "src/NNS_part.cpp",
+    "tests/testthat/test_NNS_reg_infinite.R"
   ],
+  "affected_python_modules": [],
+  "parity_tests": [],
+  "cache_scope": [],
   "requires_fresh_cache": false,
   "requires_export_review": false,
-  "has_unmapped_r_files": false,
-  "unmapped_r_files": [],
+  "has_unmapped_r_files": true,
+  "unmapped_r_files": [
+    "R/Partition_Map.R"
+  ],
   "warnings": []
 }
diff --git a/upstream/NNS b/upstream/NNS
index 7250bb62..cf18e19a 160000
--- a/upstream/NNS
+++ b/upstream/NNS
@@ -1 +1 @@
-Subproject commit 7250bb627d12f6cdb1dbe60a8b8e50385e2a7c41
+Subproject commit cf18e19a8ab2584b5369857fdcda59ef3a864ec5