diff --git a/opendcs-rest-api/src/main/java/org/opendcs/odcsapi/res/DatatypeUnitResources.java b/opendcs-rest-api/src/main/java/org/opendcs/odcsapi/res/DatatypeUnitResources.java
index 8331a1c2..575ea99f 100644
--- a/opendcs-rest-api/src/main/java/org/opendcs/odcsapi/res/DatatypeUnitResources.java
+++ b/opendcs-rest-api/src/main/java/org/opendcs/odcsapi/res/DatatypeUnitResources.java
@@ -412,6 +412,7 @@ public Response postEUConv(ApiUnitConverter euc) throws DbException
 			if(ucId != null)
 			{
 				dbIo.deleteUnitConverter(ucId);
+				unitConverterDb.forceSetId(DbKey.NullKey);
 			}
 			dbIo.insertUnitConverter(unitConverterDb);
 			return Response.status(HttpServletResponse.SC_CREATED).entity(map(unitConverterDb)).build();