From 5c8927678ad4ae2d886372fe1ba07b4722795775 Mon Sep 17 00:00:00 2001
From: Jon Evans <jon@craftyjon.com>
Date: Mon, 4 Jan 2021 13:22:58 -0500
Subject: [PATCH] Don't link a project to a board more than once

Fixes https://gitlab.com/kicad/code/kicad/-/issues/6929
---
 pcbnew/board.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pcbnew/board.cpp b/pcbnew/board.cpp
index 86370d160a..762c118aa5 100644
--- a/pcbnew/board.cpp
+++ b/pcbnew/board.cpp
@@ -139,6 +139,9 @@ void BOARD::BuildConnectivity()
 
 void BOARD::SetProject( PROJECT* aProject )
 {
+    if( m_project )
+        ClearProject();
+
     m_project = aProject;
 
     if( aProject )