diff --git a/Tools/Scripts/ReliefRenderTool.cs b/Tools/Scripts/ReliefRenderTool.cs
index 2a47460..955866b 100644
--- a/Tools/Scripts/ReliefRenderTool.cs
+++ b/Tools/Scripts/ReliefRenderTool.cs
@@ -26,7 +26,7 @@ namespace IslaApocalypse.Tools
 	///   ISLA_LOOKS     comma-separated look names  (default: atlas,relief,dusk)
 	///   ISLA_TASK      authoring task number       (default 3)
 	///   ISLA_BATCH     descriptor, NO prefix       (default "relief_taste")
-	///   ISLA_SOURCE    batch to read .f32 from     (default 01_pass1_port)
+	///   ISLA_SOURCE    batch to read .f32 from     (default 02_pass1_port)
 	///   ISLA_DUMP_RAW  "1" to also dump .f32 when a field had to be generated
 	/// </summary>
 	public partial class ReliefRenderTool : Node
@@ -41,7 +41,10 @@ namespace IslaApocalypse.Tools
 			int[] seeds    = EnvSeeds("ISLA_SEEDS", DefaultSeeds);
 			int task       = EnvInt("ISLA_TASK", 3);            // the task that authored this batch
 			string batch   = EnvStr("ISLA_BATCH", "relief_taste");
-			string source  = EnvStr("ISLA_SOURCE", "01_pass1_port");
+			// ⚠ A FULL batch folder name, prefix included — it names an EXISTING folder rather than
+			// composing a new one, so it is not run through BatchRoot. Tracks TerrainGenTool's
+			// default output: BatchRoot(task 2, "pass1_port") = 02_pass1_port.
+			string source  = EnvStr("ISLA_SOURCE", "02_pass1_port");
 			bool dumpRaw   = EnvStr("ISLA_DUMP_RAW", "0") == "1";
 			LookConfig[] looks = SelectLooks(EnvStr("ISLA_LOOKS", null));
 
diff --git a/Tools/Scripts/ReviewBatchTool.cs b/Tools/Scripts/ReviewBatchTool.cs
index 4dbc30e..0b218cc 100644
--- a/Tools/Scripts/ReviewBatchTool.cs
+++ b/Tools/Scripts/ReviewBatchTool.cs
@@ -25,7 +25,7 @@ namespace IslaApocalypse.Tools
 	///
 	///   ISLA_TASK      authoring task number      (default 4)
 	///   ISLA_BATCH     descriptor, NO prefix      (default "review")
-	///   ISLA_SOURCE    batch holding the .f32     (default 01_pass1_port)
+	///   ISLA_SOURCE    batch holding the .f32     (default 02_pass1_port)
 	///   ISLA_MAPSIZE   side in columns            (default 2048)
 	///   ISLA_SEEDS     comma-separated positive   (default: the 4 pinned seeds)
 	/// </summary>
@@ -62,7 +62,13 @@ namespace IslaApocalypse.Tools
 
 			int task      = EnvInt("ISLA_TASK", 4);
 			string descr  = EnvStr("ISLA_BATCH", "review");
-			string source = EnvStr("ISLA_SOURCE", "01_pass1_port");
+			// ⚠ A FULL batch folder name, prefix included — this NAMES AN EXISTING FOLDER rather than
+			// composing a new one, so it is not run through BatchRoot. The default tracks where
+			// TerrainGenTool writes by default: BatchRoot(task 2, "pass1_port") = 02_pass1_port.
+			// It was "01_pass1_port" until chat1/05 renamed the folder to its authoring-task number;
+			// a stale default here does not fail loudly, it just silently regenerates instead of
+			// loading — which is exactly the kind of quiet cost worth pinning to the real name.
+			string source = EnvStr("ISLA_SOURCE", "02_pass1_port");
 			int mapSize   = EnvInt("ISLA_MAPSIZE", 2048);
 			int[] seeds   = EnvSeeds("ISLA_SEEDS", DefaultSeeds);