diff --git a/crates/scanner/src/scanner_folder.rs b/crates/scanner/src/scanner_folder.rs
index 30a03ea48..623a08a26 100644
--- a/crates/scanner/src/scanner_folder.rs
+++ b/crates/scanner/src/scanner_folder.rs
@@ -846,6 +846,16 @@ impl RawEnumerationProgress {
             }
         })
     }
+
+    fn has_checkpointable_page_index(&self) -> bool {
+        self.page_index().is_some()
+    }
+
+    fn checkpointable_entry_count(&self) -> usize {
+        self.page_index()
+            .and_then(|index| index.indexed_entries().ok())
+            .map_or(0, |entries| entries.len())
+    }
 }
 
 fn update_raw_enumeration_digest(digest: &mut Sha256, label: &[u8], value: &[u8]) {
@@ -1165,20 +1175,33 @@ impl FolderScanner {
     }
 
     fn finish_raw_enumeration_parent(&mut self, parent: &str) {
+        let scan_root = self.old_cache.info.name.as_str();
         self.raw_enumeration_progress.retain(|progress| {
-            progress.parent != parent
-                && !progress
-                    .parent
-                    .strip_prefix(parent)
-                    .is_some_and(|suffix| suffix.starts_with(SLASH_SEPARATOR))
+            if progress.parent == parent {
+                return parent == scan_root && progress.has_checkpointable_page_index();
+            }
+
+            !progress
+                .parent
+                .strip_prefix(parent)
+                .is_some_and(|suffix| suffix.starts_with(SLASH_SEPARATOR))
         });
     }
 
     fn take_raw_enumeration_resume_state(&mut self) -> (Option<DataUsageRawEnumerationCursor>, Option<RawEnumerationPageIndex>) {
-        match self.raw_enumeration_progress.drain(..).next() {
-            Some(progress) => (progress.cursor(), progress.page_index()),
-            None => (None, None),
+        if self.raw_enumeration_progress.is_empty() {
+            return (None, None);
         }
+        let progress_index = self
+            .raw_enumeration_progress
+            .iter()
+            .enumerate()
+            .max_by_key(|(index, progress)| (progress.checkpointable_entry_count(), std::cmp::Reverse(*index)))
+            .map(|(index, _)| index)
+            .unwrap_or(0);
+        let progress = self.raw_enumeration_progress.swap_remove(progress_index);
+        self.raw_enumeration_progress.clear();
+        (progress.cursor(), progress.page_index())
     }
 
     fn carry_forward_old_children(&mut self, parent_hash: &DataUsageHash, entry: &mut DataUsageEntry) {
diff --git a/crates/scanner/src/scanner_folder/tests.rs b/crates/scanner/src/scanner_folder/tests.rs
index 385de36fd..05ba24c72 100644
--- a/crates/scanner/src/scanner_folder/tests.rs
+++ b/crates/scanner/src/scanner_folder/tests.rs
@@ -3512,6 +3512,80 @@ fn raw_enumeration_progress_checkpoint_commits_budgeted_page_for_oracle() {
     );
 }
 
+#[tokio::test]
+async fn raw_enumeration_root_page_survives_child_partial_boundary() {
+    let (mut scanner, temp_dir) = build_test_scanner().await;
+    let _guard = TestGuard {
+        temp_dir: Some(temp_dir),
+    };
+    scanner.old_cache.info.name = "bucket".to_string();
+
+    let mut root_progress = RawEnumerationProgress::new("bucket", None);
+    root_progress.record_entry("object-0000");
+    root_progress.record_entry("object-0001");
+    scanner.raw_enumeration_progress.push(root_progress);
+    scanner.finish_raw_enumeration_parent("bucket");
+
+    assert_eq!(scanner.raw_enumeration_progress.len(), 1);
+    let root_index = scanner.raw_enumeration_progress[0]
+        .page_index()
+        .expect("completed scan root should retain its raw-page oracle");
+    assert_eq!(
+        root_index
+            .committed_entries()
+            .expect("retained root raw-page oracle should validate"),
+        vec!["object-0000".to_string(), "object-0001".to_string()]
+    );
+
+    let mut child_progress = RawEnumerationProgress::new("bucket/object-0000", None);
+    child_progress.record_entry("xl.meta");
+    scanner.raw_enumeration_progress.push(child_progress);
+    scanner.finish_raw_enumeration_parent("bucket/object-0000");
+
+    assert_eq!(
+        scanner
+            .raw_enumeration_progress
+            .iter()
+            .map(|progress| progress.parent.as_str())
+            .collect::<Vec<_>>(),
+        vec!["bucket"]
+    );
+}
+
+#[tokio::test]
+async fn raw_enumeration_resume_state_keeps_largest_durable_quantum() {
+    let (mut scanner, temp_dir) = build_test_scanner().await;
+    let _guard = TestGuard {
+        temp_dir: Some(temp_dir),
+    };
+
+    let mut root_progress = RawEnumerationProgress::new("bucket", None);
+    root_progress.record_entry("object-0000");
+    scanner.raw_enumeration_progress.push(root_progress);
+
+    let mut child_progress = RawEnumerationProgress::new("bucket/object-0000", None);
+    child_progress.record_entry("part-0000");
+    child_progress.record_entry("part-0001");
+    child_progress.record_entry("part-0002");
+    scanner.raw_enumeration_progress.push(child_progress);
+
+    let (cursor, page_index) = scanner.take_raw_enumeration_resume_state();
+    assert_eq!(
+        cursor.as_ref().expect("largest raw quantum should include a cursor").parent,
+        "bucket/object-0000"
+    );
+    assert_eq!(
+        page_index
+            .as_ref()
+            .expect("largest raw quantum should include a page index")
+            .indexed_entries()
+            .expect("selected page index should validate")
+            .len(),
+        3
+    );
+    assert!(scanner.raw_enumeration_progress.is_empty());
+}
+
 #[test]
 fn raw_enumeration_progress_retains_resume_index_until_unordered_entries_reappear() {
     let mut index = RawEnumerationPageIndex::new("bucket", 2).expect("raw page index should initialize");
diff --git a/scripts/diagnose_scanner_enumeration_restart.py b/scripts/diagnose_scanner_enumeration_restart.py
index 8acbee1a3..3be70cdfb 100644
--- a/scripts/diagnose_scanner_enumeration_restart.py
+++ b/scripts/diagnose_scanner_enumeration_restart.py
@@ -85,15 +85,20 @@ def validate_recoverable_quantum(reports, *, objects, budget, require_converged)
         raise ValueError("no scanner restart reports were produced")
     previous = None
     made_enumeration_progress = False
+    made_raw_page_commit_progress = False
     made_classification_progress = False
     made_durable_progress = False
     for index, report in enumerate(reports):
         validate_report(report, round_number=index, pid=report["pid"], objects=objects, budget=budget)
+        if report["raw_page_index_parent"] == "bucket" and report["raw_page_index_committed_entries"] > 0:
+            made_raw_page_commit_progress = True
         if previous is not None:
             if report["objects_before"] != previous["objects_retained"]:
                 raise ValueError("durable retained coverage did not survive process restart")
             if report["objects_retained"] < previous["objects_retained"]:
                 raise ValueError("durable retained coverage regressed across restart")
+            if replays_raw_window(previous, report):
+                raise ValueError("raw enumeration window replayed without durable coverage")
             if (report["raw_page_index_parent"] == previous["raw_page_index_parent"]
                     and report["raw_page_index_committed_entries"] < previous["raw_page_index_committed_entries"]
                     and not previous["raw_page_index_complete"]):
@@ -104,6 +109,8 @@ def validate_recoverable_quantum(reports, *, objects, budget, require_converged)
         previous = report
     if not made_enumeration_progress:
         raise ValueError("restart proof did not exercise raw enumeration")
+    if not made_raw_page_commit_progress:
+        raise ValueError("restart proof did not commit a durable raw enumeration page")
     if not made_classification_progress:
         raise ValueError("restart proof did not exercise object classification")
     if not made_durable_progress:
diff --git a/scripts/test_diagnose_scanner_enumeration_restart.py b/scripts/test_diagnose_scanner_enumeration_restart.py
index 02120f26e..370ebf580 100644
--- a/scripts/test_diagnose_scanner_enumeration_restart.py
+++ b/scripts/test_diagnose_scanner_enumeration_restart.py
@@ -140,6 +140,15 @@ class ReportTests(unittest.TestCase):
         advanced = dict(current, objects_retained=1)
         self.assertFalse(replays_raw_window(previous, advanced))
 
+    def test_recoverable_quantum_rejects_replayed_raw_window(self):
+        previous = self.report()
+        previous.update(objects_retained=0, versions_retained=0, bytes_retained=0,
+                        objects_processed=0, snapshot_complete=False, outcome="partial")
+        current = dict(previous, round=1, pid=124, objects_before=0)
+
+        with self.assertRaisesRegex(ValueError, "raw enumeration window replayed"):
+            validate_recoverable_quantum([previous, current], objects=4, budget=16, require_converged=False)
+
     def test_recoverable_quantum_requires_three_stage_progress_and_convergence(self):
         first = self.report()
         first.update(round=0, pid=123, raw_entries=2, raw_page_index_committed_entries=2,
@@ -193,6 +202,15 @@ class ReportTests(unittest.TestCase):
         with self.assertRaisesRegex(ValueError, "object classification"):
             validate_recoverable_quantum([report], objects=4, budget=16, require_converged=False)
 
+    def test_recoverable_quantum_rejects_missing_raw_page_commit(self):
+        report = self.report()
+        report.update(snapshot_complete=False, outcome="partial",
+                      raw_page_index_committed_entries=0, raw_page_index_indexed_entries=1,
+                      objects_retained=1, versions_retained=1, bytes_retained=1)
+
+        with self.assertRaisesRegex(ValueError, "durable raw enumeration page"):
+            validate_recoverable_quantum([report], objects=4, budget=16, require_converged=False)
+
 
 if __name__ == "__main__":
     unittest.main()