diff --git a/canframemodel.cpp b/canframemodel.cpp
index ed8f17a..98385cf 100644
--- a/canframemodel.cpp
+++ b/canframemodel.cpp
@@ -362,19 +362,27 @@ void CANFrameModel::sendBulkRefresh(int num)
     //of how many by tracking the number we last knew about as opposed to how many rows there
     //are now.
     num = filteredFrames.count() - lastUpdateNumFrames;
-    lastUpdateNumFrames += num; //done this way to avoid asking for filteredFrames.count() again
+
+    if (num < 0) return;
+
+    //qDebug() << "Num: " << num;
 
     if (num == 0 && !overwriteDups) return;
     if (filteredFrames.count() == 0) return;
 
+    lastUpdateNumFrames += num; //done this way to avoid asking for filteredFrames.count() again
+
     qDebug() << "Bulk refresh of " << num;
 
     if (!overwriteDups)
     {        
         mutex.lock();
         if (num > filteredFrames.count()) num = filteredFrames.count();
-        beginInsertRows(QModelIndex(), filteredFrames.count() - num, filteredFrames.count() - 1);
-        endInsertRows();
+        //qDebug() << "From " << (filteredFrames.count() - num) << " to " << (filteredFrames.count() - 1);
+        //beginInsertRows(QModelIndex(), filteredFrames.count() - num, filteredFrames.count() - 1);
+        //endInsertRows();
+        beginResetModel();
+        endResetModel();
         mutex.unlock();
     }
     else