diff --git a/sources/dataBase/projectdatabase.cpp b/sources/dataBase/projectdatabase.cpp
index 75bff0ed6..23bd0e94e 100644
--- a/sources/dataBase/projectdatabase.cpp
+++ b/sources/dataBase/projectdatabase.cpp
@@ -319,10 +319,23 @@ void projectDataBase::addElement(Element *element)
 void projectDataBase::removeElement(Element *element)
 {
 	m_content_changed = true;
+	bool changed = false;
+
 	m_remove_element_query.bindValue(":uuid", element->uuid().toString());
-	if(!m_remove_element_query.exec()) {
-		qDebug() << "projectDataBase::removeElement remove error : " << m_remove_element_query.lastError();
+	if (m_remove_element_query.exec()) {
+		changed = true;
 	} else {
+		qDebug() << "projectDataBase::removeElement remove error : " << m_remove_element_query.lastError();
+	}
+
+	m_remove_element_info_query.bindValue(":uuid", element->uuid().toString());
+	if (m_remove_element_info_query.exec()) {
+		changed = true;
+	} else {
+		qDebug() << "projectDataBase::removeElement remove element_info error : " << m_remove_element_info_query.lastError();
+	}
+
+	if (changed) {
 		emit dataBaseUpdated();
 	}
 }
@@ -1159,6 +1172,21 @@ void projectDataBase::prepareQuery()
 	m_remove_element_query = QSqlQuery(m_data_base);
 	m_remove_element_query.prepare(remove_element);
 
+		//REMOVE ELEMENT INFO
+		//element_info has no ON DELETE CASCADE (foreign keys aren't
+		//enforced by this connection), so removeElement() must clear it
+		//explicitly. Without this, the row is orphaned under the removed
+		//element's uuid, and re-adding an element with that same uuid
+		//later -- undo of this same removal, or a redo replaying it --
+		//hits element_info's PRIMARY KEY constraint on element_uuid: the
+		//element re-add succeeds, but its element_info insert silently
+		//fails and is lost. removeDiagram()'s cascade already clears this
+		//table when a whole folio goes, but that does not run for a
+		//single element removed on its own.
+	QString remove_element_info("DELETE FROM element_info WHERE element_uuid=:uuid");
+	m_remove_element_info_query = QSqlQuery(m_data_base);
+	m_remove_element_info_query.prepare(remove_element_info);
+
 		//UPDATE ELEMENT INFO
 	QString update_str("UPDATE element_info SET ");
 	for (auto string : QETInformation::elementInfoKeys()) {
diff --git a/sources/dataBase/projectdatabase.h b/sources/dataBase/projectdatabase.h
index 55aacedd5..01da46856 100644
--- a/sources/dataBase/projectdatabase.h
+++ b/sources/dataBase/projectdatabase.h
@@ -139,6 +139,7 @@ class projectDataBase : public QObject
 		QSqlQuery m_insert_elements_query,
 				  m_insert_element_info_query,
 				  m_remove_element_query,
+				  m_remove_element_info_query,
 				  m_update_element_query,
 				  m_insert_diagram_query,
 				  m_remove_diagram_query,