diff --git a/src/brainy.ts b/src/brainy.ts
index 2ee6e176..d9b1c0b8 100644
--- a/src/brainy.ts
+++ b/src/brainy.ts
@@ -1856,26 +1856,6 @@ export class Brainy<T = any> implements BrainyInterface<T> {
       }
     }
 
-    // v5.7.3: Ensure nounTypeCache is populated for all successful entities
-    // This prevents cache misses that trigger expensive 42-type searches
-    // when entities are immediately queried (e.g., during brain.relate())
-    const cacheWarmingNeeded = result.successful.filter(id =>
-      !(this.storage as any).nounTypeCache?.has(id)
-    )
-
-    if (cacheWarmingNeeded.length > 0) {
-      // Warm the cache by fetching metadata for entities not in cache
-      await Promise.all(
-        cacheWarmingNeeded.map(async (id) => {
-          try {
-            await this.storage.getNounMetadata(id)
-          } catch (error) {
-            // Ignore errors during cache warming (entity may be invalid)
-          }
-        })
-      )
-    }
-
     result.duration = Date.now() - startTime
     return result
   }
@@ -3685,16 +3665,16 @@ export class Brainy<T = any> implements BrainyInterface<T> {
       // 3. Flush graph adjacency index (relationship cache)
       // Note: Graph structure is already persisted via storage.saveVerb() calls
       // This just flushes the in-memory cache for performance
-      this.graphIndex.flush(),
+      this.graphIndex.flush()
 
-      // 4. v5.7.3: Clear write-through cache after flush
-      // Cache persists during batch operations for read-after-write consistency
-      // Cleared here after all writes are guaranteed flushed to disk
-      (async () => {
-        if (this.storage && typeof (this.storage as any).writeCache !== 'undefined') {
-          (this.storage as any).writeCache.clear()
-        }
-      })()
+      // Note: Write-through cache (storage.writeCache) is NOT cleared here
+      // Cache persists indefinitely for read-after-write consistency
+      // Provides safety net for:
+      // - Cloud storage eventual consistency (S3, GCS, Azure, R2)
+      // - Filesystem buffer cache timing
+      // - Type cache warming period (nounTypeCache population)
+      // Cache entries are removed only when explicitly deleted (deleteObjectFromBranch)
+      // Memory footprint is negligible for typical workloads (<10MB for 100k entities)
     ])
 
     const elapsed = Date.now() - startTime
diff --git a/src/import/ImportCoordinator.ts b/src/import/ImportCoordinator.ts
index a1a5402e..9ed7cad5 100644
--- a/src/import/ImportCoordinator.ts
+++ b/src/import/ImportCoordinator.ts
@@ -1048,11 +1048,6 @@ export class ImportCoordinator {
         console.warn(`⚠️  ${addResult.failed.length} entities failed to create`)
       }
 
-      // v5.7.3: Ensure all writes are flushed before creating relationships
-      // Fixes "Source entity not found" error in v5.7.0/v5.7.1/v5.7.2
-      // Guarantees entities are fully persisted and queryable before brain.relate() is called
-      await this.brain.flush()
-
       // Create provenance links in batch
       if (documentEntityId && options.createProvenanceLinks !== false && entities.length > 0) {
         const provenanceParams = entities.map((entity, idx) => {