diff --git a/hoot-core/src/main/cpp/hoot/core/ops/RelationMemberSwapper.cpp b/hoot-core/src/main/cpp/hoot/core/ops/RelationMemberSwapper.cpp
new file mode 100644
index 0000000..491a233
--- /dev/null
+++ b/hoot-core/src/main/cpp/hoot/core/ops/RelationMemberSwapper.cpp
@@ -0,0 +1,81 @@
+/*
+ * This file is part of Hootenanny.
+ *
+ * Hootenanny is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * --------------------------------------------------------------------
+ *
+ * The following copyright notices are generated automatically. If you
+ * have a new notice to add, please use the format:
+ * " * @copyright Copyright ..."
+ * This will properly maintain the copyright information. DigitalGlobe
+ * copyrights will be updated automatically.
+ *
+ * @copyright Copyright (C) 2020 DigitalGlobe (http://www.digitalglobe.com/)
+ */
+
+#include "RelationMemberSwapper.h"
+
+// Hoot
+#include <hoot/core/util/Factory.h>
+#include <hoot/core/util/Log.h>
+#include <hoot/core/elements/Relation.h>
+#include <hoot/core/index/OsmMapIndex.h>
+
+namespace hoot
+{
+
+HOOT_FACTORY_REGISTER(OsmMapOperation, RelationMemberSwapper)
+
+RelationMemberSwapper::RelationMemberSwapper() :
+_includeReviewRelations(true)
+{
+}
+
+RelationMemberSwapper::RelationMemberSwapper(
+ const ElementId& idToReplace, const ElementId& idToReplaceWith,
+ const bool includeReviewRelations) :
+_idToReplace(idToReplace),
+_idToReplaceWith(idToReplaceWith),
+_includeReviewRelations(includeReviewRelations)
+{
+}
+
+void RelationMemberSwapper::apply(const OsmMapPtr& map)
+{
+ _numAffected = 0;
+
+ const std::set<long> owningRelationIds =
+ map->getIndex().getElementToRelationMap()->getRelationByElement(_idToReplace);
+ for (std::set<long>::const_iterator it = owningRelationIds.begin(); it != owningRelationIds.end();
+ ++it)
+ {
+ RelationPtr owningRelation = map->getRelation(*it);
+ if (owningRelation &&
+ (!_includeReviewRelations || owningRelation->getType() != MetadataTags::RelationReview()))
+ {
+ owningRelation->replaceElement(_idToReplace, _idToReplaceWith);
+ _numAffected++;
+ }
+ }
+}
+
+void RelationMemberSwapper::swap(
+ const ElementId& idToReplace, const ElementId& idToReplaceWith, const OsmMapPtr& map,
+ const bool includeReviewRelations)
+{
+ RelationMemberSwapper(idToReplace, idToReplaceWith, includeReviewRelations).apply(map);
+}
+
+}