diff --git a/Ghidra/Debug/Debugger/src/main/java/ghidra/app/plugin/core/debug/gui/memview/DebuggerMemviewTraceListener.java b/Ghidra/Debug/Debugger/src/main/java/ghidra/app/plugin/core/debug/gui/memview/DebuggerMemviewTraceListener.java
index 47beb80c50..10fec2c8c8 100644
--- a/Ghidra/Debug/Debugger/src/main/java/ghidra/app/plugin/core/debug/gui/memview/DebuggerMemviewTraceListener.java
+++ b/Ghidra/Debug/Debugger/src/main/java/ghidra/app/plugin/core/debug/gui/memview/DebuggerMemviewTraceListener.java
@@ -230,6 +230,7 @@ public class DebuggerMemviewTraceListener extends TraceDomainObjectListener {
 	}
 
 	private void processTrace(Trace trace) {
+		updateList.clear();
 		provider.reset();
 		TraceThreadManager threadManager = trace.getThreadManager();
 		for (TraceThread thread : threadManager.getAllThreads()) {