diff --git a/include/sta/Sdc.hh b/include/sta/Sdc.hh
index 03dd6513..82e4aac7 100644
--- a/include/sta/Sdc.hh
+++ b/include/sta/Sdc.hh
@@ -187,6 +187,7 @@ public:
   bool isConstrained(const Net *net) const;
   // Build data structures for search.
   void searchPreamble();
+  void deleteNetBefore(Net *net);
 
   // SWIG sdc interface.
   AnalysisType analysisType() { return analysis_type_; }
diff --git a/sdc/Sdc.cc b/sdc/Sdc.cc
index 2473f480..5d10c387 100644
--- a/sdc/Sdc.cc
+++ b/sdc/Sdc.cc
@@ -403,6 +403,18 @@ Sdc::initInstancePvtMaps()
     instance_pvt_maps_[mm_index] = nullptr;
 }
 
+void
+Sdc::deleteNetBefore(Net *net)
+{
+  if (net_wire_cap_map_) {
+    for (int corner_index = 0; corner_index < corners_->count(); corner_index++) {
+      net_wire_cap_map_[corner_index].erase(net);
+      for (Pin *pin : *network_->drivers(net))
+	drvr_pin_wire_cap_map_[corner_index].erase(pin);
+    }
+  }
+}
+
 ////////////////////////////////////////////////////////////////
 
 bool
diff --git a/search/Sta.cc b/search/Sta.cc
index b3c83c87..1b7e3e14 100644
--- a/search/Sta.cc
+++ b/search/Sta.cc
@@ -4170,6 +4170,7 @@ Sta::deleteNetBefore(Net *net)
     }
     delete pin_iter;
   }
+  sdc_->deleteNetBefore(net);
 }
 
 void