diff --git a/src/autorouter/anterouter.rs b/src/autorouter/anterouter.rs
index baf662f..82b9857 100644
--- a/src/autorouter/anterouter.rs
+++ b/src/autorouter/anterouter.rs
@@ -58,6 +58,7 @@ impl Anterouter {
     pub fn anteroute(
         &mut self,
         autorouter: &mut Autorouter<impl AccessMesadata>,
+        recorder: &mut BoardEdit,
         options: &AnterouterOptions,
     ) {
         // PERF: Unnecessary clone.
@@ -86,6 +87,7 @@ impl Anterouter {
                         ),
                     TerminatingScheme::Fanout => self.anteroute_fanout(
                         autorouter,
+                        recorder,
                         endpoint_indices.0,
                         *ratline,
                         endpoint_dots.0,
@@ -111,6 +113,7 @@ impl Anterouter {
                         ),
                     TerminatingScheme::Fanout => self.anteroute_fanout(
                         autorouter,
+                        recorder,
                         endpoint_indices.1,
                         *ratline,
                         endpoint_dots.1,
@@ -125,6 +128,7 @@ impl Anterouter {
     fn anteroute_fanout(
         &mut self,
         autorouter: &mut Autorouter<impl AccessMesadata>,
+        recorder: &mut BoardEdit,
         ratvertex: NodeIndex<usize>,
         ratline: RatlineUid,
         source_dot: FixedDotIndex,
@@ -160,6 +164,7 @@ impl Anterouter {
         if self
             .anteroute_fanout_on_bbox(
                 autorouter,
+                recorder,
                 ratvertex,
                 source_dot,
                 small_bbox,
@@ -193,6 +198,7 @@ impl Anterouter {
         if self
             .anteroute_fanout_on_bbox(
                 autorouter,
+                recorder,
                 ratvertex,
                 source_dot,
                 large_bbox,
@@ -208,6 +214,7 @@ impl Anterouter {
         if self
             .anteroute_fanout_on_bbox(
                 autorouter,
+                recorder,
                 ratvertex,
                 source_dot,
                 small_bbox,
@@ -223,6 +230,7 @@ impl Anterouter {
         if self
             .anteroute_fanout_on_bbox(
                 autorouter,
+                recorder,
                 ratvertex,
                 source_dot,
                 large_bbox,
@@ -241,6 +249,7 @@ impl Anterouter {
     fn anteroute_fanout_on_bbox(
         &mut self,
         autorouter: &mut Autorouter<impl AccessMesadata>,
+        recorder: &mut BoardEdit,
         ratvertex: NodeIndex<usize>,
         source_dot: FixedDotIndex,
         bbox: AABB<[f64; 2]>,
@@ -251,6 +260,7 @@ impl Anterouter {
         if self
             .anteroute_fanout_on_bbox_in_direction(
                 autorouter,
+                recorder,
                 ratvertex,
                 source_dot,
                 bbox,
@@ -273,6 +283,7 @@ impl Anterouter {
             if self
                 .anteroute_fanout_on_bbox_in_direction(
                     autorouter,
+                    recorder,
                     ratvertex,
                     source_dot,
                     bbox,
@@ -291,6 +302,7 @@ impl Anterouter {
             if self
                 .anteroute_fanout_on_bbox_in_direction(
                     autorouter,
+                    recorder,
                     ratvertex,
                     source_dot,
                     bbox,
@@ -314,6 +326,7 @@ impl Anterouter {
     fn anteroute_fanout_on_bbox_in_direction(
         &mut self,
         autorouter: &mut Autorouter<impl AccessMesadata>,
+        recorder: &mut BoardEdit,
         ratvertex: NodeIndex<usize>,
         source_dot: FixedDotIndex,
         bbox: AABB<[f64; 2]>,
@@ -323,6 +336,7 @@ impl Anterouter {
     ) -> Result<(), ()> {
         let (_, dots) = self.place_fanout_via_on_bbox_in_direction(
             autorouter,
+            recorder,
             ratvertex,
             source_dot,
             bbox,
@@ -350,7 +364,7 @@ impl Anterouter {
             .unwrap();
 
         autorouter.board.layout_mut().add_fixed_seg(
-            &mut LayoutEdit::new(),
+            &mut recorder.layout_edit,
             source_dot,
             fanout_dot,
             FixedSegWeight(GeneralSegWeight {
@@ -366,6 +380,7 @@ impl Anterouter {
     fn place_fanout_via_on_bbox_in_direction(
         &mut self,
         autorouter: &mut Autorouter<impl AccessMesadata>,
+        recorder: &mut BoardEdit,
         ratvertex: NodeIndex<usize>,
         source_dot: FixedDotIndex,
         bbox: AABB<[f64; 2]>,
@@ -409,10 +424,8 @@ impl Anterouter {
                 * (bbox_center + bbox_anchor_with_clearance - center)
                     .dot(cardinal_direction_vector);
 
-        let mut board_edit = BoardEdit::new();
-
         if let Ok((via, dots)) = autorouter.board.add_via(
-            &mut board_edit,
+            recorder,
             ViaWeight {
                 from_layer: std::cmp::min(source_layer, target_layer),
                 to_layer: std::cmp::max(source_layer, target_layer),
diff --git a/src/autorouter/multilayer_autoroute.rs b/src/autorouter/multilayer_autoroute.rs
index 5596be4..04c2493 100644
--- a/src/autorouter/multilayer_autoroute.rs
+++ b/src/autorouter/multilayer_autoroute.rs
@@ -18,7 +18,7 @@ use crate::{
     },
     board::edit::BoardEdit,
     drawing::graph::PrimitiveIndex,
-    geometry::primitive::PrimitiveShape,
+    geometry::{edit::Edit, primitive::PrimitiveShape},
     router::{navcord::Navcord, navmesh::Navmesh, thetastar::ThetastarStepper},
     stepper::{Abort, EstimateProgress, Step},
 };
@@ -31,6 +31,7 @@ pub struct MultilayerAutorouteOptions {
 
 pub struct MultilayerAutorouteExecutionStepper {
     planar: PlanarAutorouteExecutionPermutator,
+    anteroute_edit: BoardEdit,
 }
 
 impl MultilayerAutorouteExecutionStepper {
@@ -41,10 +42,12 @@ impl MultilayerAutorouteExecutionStepper {
         options: MultilayerAutorouteOptions,
     ) -> Result<Self, AutorouterError> {
         let mut assigner = Anterouter::new(plan);
-        assigner.anteroute(autorouter, &options.anterouter);
+        let mut anteroute_edit = BoardEdit::new();
+        assigner.anteroute(autorouter, &mut anteroute_edit, &options.anterouter);
 
         Ok(Self {
             planar: PlanarAutorouteExecutionPermutator::new(autorouter, ratlines, options.planar)?,
+            anteroute_edit,
         })
     }
 }
@@ -59,7 +62,14 @@ impl<M: AccessMesadata> Step<Autorouter<M>, Option<BoardEdit>, PlanarAutorouteCo
         autorouter: &mut Autorouter<M>,
     ) -> Result<ControlFlow<Option<BoardEdit>, PlanarAutorouteContinueStatus>, AutorouterError>
     {
-        self.planar.step(autorouter)
+        match self.planar.step(autorouter) {
+            Ok(ControlFlow::Break(Some(edit))) => {
+                self.anteroute_edit.merge(edit);
+                // FIXME: Unnecessary large clone.
+                Ok(ControlFlow::Break(Some(self.anteroute_edit.clone())))
+            }
+            x => x,
+        }
     }
 }