diff --git a/Marco.Pms.Services/Service/PurchaseInvoiceService.cs b/Marco.Pms.Services/Service/PurchaseInvoiceService.cs
index 70a8b0b..1a50d0b 100644
--- a/Marco.Pms.Services/Service/PurchaseInvoiceService.cs
+++ b/Marco.Pms.Services/Service/PurchaseInvoiceService.cs
@@ -749,7 +749,7 @@ namespace Marco.Pms.Services.Service
                 await context.SaveChangesAsync(ct);
 
                 // 5. Handle attachments update.
-                var newAttachments = model.Attachments.Where(a => a.IsActive).ToList();
+                var newAttachments = model.Attachments.Where(a => !a.DocumentId.HasValue && a.IsActive).ToList();
                 var deleteAttachmentIds = model.Attachments
                     .Where(a => a.DocumentId.HasValue && !a.IsActive)
                     .Select(a => a.DocumentId!.Value)
@@ -1134,6 +1134,7 @@ namespace Marco.Pms.Services.Service
         #endregion
 
         #region =================================================================== Purchase Invoice History Functions ===================================================================
+
         #endregion
 
         #region =================================================================== Helper Functions ===================================================================