From 85f6ff48e75f38f957542c719f5384522670f1e5 Mon Sep 17 00:00:00 2001
From: Roberto Fernandez Bautista <roberto.fer.bau@gmail.com>
Date: Tue, 12 Apr 2022 21:33:52 +0100
Subject: [PATCH] CADSTAR Sch: Clear symbol of all elements before overwriting
 with new one Fixes https://gitlab.com/kicad/code/kicad/-/issues/11378

---
 .../sch_plugins/cadstar/cadstar_sch_archive_loader.cpp     | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/eeschema/sch_plugins/cadstar/cadstar_sch_archive_loader.cpp b/eeschema/sch_plugins/cadstar/cadstar_sch_archive_loader.cpp
index 01f529e9d13..b1948bd6d75 100644
--- a/eeschema/sch_plugins/cadstar/cadstar_sch_archive_loader.cpp
+++ b/eeschema/sch_plugins/cadstar/cadstar_sch_archive_loader.cpp
@@ -1300,6 +1300,13 @@ void CADSTAR_SCH_ARCHIVE_LOADER::loadSymDefIntoLibrary( const SYMDEF_ID& aSymdef
     SYMDEF_SCM symbol = Library.SymbolDefinitions.at( aSymdefID );
     int        gateNumber = getKiCadUnitNumberFromGate( aGateID );
 
+    // Ensure there are no items on this unit (e.g. if we already previously loaded the symbol from
+    // the part definition)
+    std::vector<LIB_ITEM*> drawItems = aSymbol->GetUnitDrawItems( gateNumber, 0 );
+
+    for( LIB_ITEM* item : drawItems )
+        aSymbol->RemoveDrawItem( item );
+
     for( std::pair<FIGURE_ID, FIGURE> figPair : symbol.Figures )
     {
         FIGURE fig = figPair.second;