From b0d7c1a81003633bf0b37672238903132a21c0cc Mon Sep 17 00:00:00 2001
From: Jeff Young <jeff@rokeby.ie>
Date: Sat, 27 Nov 2021 12:33:34 +0000
Subject: [PATCH] Don't leave orphaned nets in pads after editing in FPEditor.

Fixes https://gitlab.com/kicad/code/kicad/issues/9789
---
 pcbnew/dialogs/dialog_exchange_footprints.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/pcbnew/dialogs/dialog_exchange_footprints.cpp b/pcbnew/dialogs/dialog_exchange_footprints.cpp
index 0bf42eb447..bf10795c4c 100644
--- a/pcbnew/dialogs/dialog_exchange_footprints.cpp
+++ b/pcbnew/dialogs/dialog_exchange_footprints.cpp
@@ -517,13 +517,19 @@ void PCB_EDIT_FRAME::ExchangeFootprint( FOOTPRINT* aExisting, FOOTPRINT* aNew,
     {
         PAD* pad_model = nullptr;
 
-        // Skip pad not on a copper layer, because we only want to transfer the net info
+        // Pads with no copper are never connected to a net
         if( !pad->IsOnCopperLayer() )
+        {
+            pad->SetNetCode( NETINFO_LIST::UNCONNECTED );
             continue;
+        }
 
         // Pads with no numbers are never connected to a net
         if( pad->GetNumber().IsEmpty() )
+        {
+            pad->SetNetCode( NETINFO_LIST::UNCONNECTED );
             continue;
+        }
 
         // Search for a similar pad on a copper layer, to reuse net info
         PAD* last_pad = nullptr;