diff --git a/crates/data-usage/src/data_usage.rs b/crates/data-usage/src/data_usage.rs
index 47043c23b..ca00edc32 100644
--- a/crates/data-usage/src/data_usage.rs
+++ b/crates/data-usage/src/data_usage.rs
@@ -375,7 +375,8 @@ pub struct DataUsageInfo {
     /// tier exists, so an absent value means "not accounted", never "zero".
     #[serde(default, skip_serializing_if = "Option::is_none")]
     pub tier_stats: Option<AllTierStats>,
-    /// Bounded diagnostics for objects classified into [`UNKNOWN_TIER`].
+    /// Bounded diagnostics and separate logical/physical counters for objects
+    /// classified into [`UNKNOWN_TIER`].
     #[serde(default, skip_serializing_if = "Option::is_none")]
     pub unknown_tier_stats: Option<UnknownTierStats>,
 
diff --git a/crates/scanner/src/data_usage_define.rs b/crates/scanner/src/data_usage_define.rs
index 9dfb4cee9..f6fd2b3d1 100644
--- a/crates/scanner/src/data_usage_define.rs
+++ b/crates/scanner/src/data_usage_define.rs
@@ -220,8 +220,8 @@ impl ScannerSizeSummaryExt for SizeSummary {
         }
 
         let builtin_tier = tier == storageclass::STANDARD || tier == storageclass::RRS;
-        let tier_registry_is_empty = self.tier_stats.is_empty()
-            || (self.tier_stats.len() == 1 && self.tier_stats.contains_key(UNKNOWN_TIER));
+        let tier_registry_is_empty =
+            self.tier_stats.is_empty() || (self.tier_stats.len() == 1 && self.tier_stats.contains_key(UNKNOWN_TIER));
         let known_tier = tier != UNKNOWN_TIER && (builtin_tier || self.tier_stats.contains_key(&tier));
 
         // With no configured tier, retain the historical empty-map shape for