diff --git a/src/core/js/ext_revisions.js b/src/core/js/ext_revisions.js
index cf0da0c78a83b87c38ecfdce9e3d576328e2b04c..5603730b36e1f2d1ad357316683331c213b472b2 100644
--- a/src/core/js/ext_revisions.js
+++ b/src/core/js/ext_revisions.js
@@ -75,16 +75,18 @@ var ext_revisions = function ($, logger, edit_mode, getEntityID, transaction, _c
         logger.debug("insert obsolete", id);
 
         // create new obsolete entity from the original
-        var obsolete = await transaction.retrieveEntityById(id);
+        const obsolete = await transaction.retrieveEntityById(id);
         $(obsolete).attr("id", "-1");
         $(obsolete).find("Permissions").remove();
         $(obsolete).find("Parent").remove();
         $(obsolete).append(`<Parent name="${_datamodel.obsolete}"/>`);
 
-        var doc = _createDocument("Request");
+        const doc = _createDocument("Request");
         doc.firstElementChild.appendChild(obsolete);
-        var result = await transaction.insertEntitiesXml(doc);
-        return $(result.firstElementChild).find("[id]").first().attr("id");
+        const result = await transaction.insertEntitiesXml(doc);
+        const obsolete_id = $(result.firstElementChild).find("[id]").first().attr("id");
+        logger.trace("leave _insert_obsolete", obsolete_id);
+        return obsolete_id;
     };
 
     /**
@@ -98,11 +100,12 @@ var ext_revisions = function ($, logger, edit_mode, getEntityID, transaction, _c
      * @returns {string} A HTML represesentation of an entity property.
      */
     var _make_revision_of_property = async function (obsolete_id) {
-        logger.debug("_make_revision_of_property", obsolete_id);
-        var ret = (await transformation.transformProperty(str2xml(`<Response><Property id="${_datamodel._revisionOfId}" name="${_datamodel.revisionOf}" datatype="${_datamodel.obsolete}"></Property></Response>`))).firstElementChild;
+        logger.trace("enter _make_revision_of_property", obsolete_id);
+        const ret = (await transformation.transformProperty(str2xml(`<Response><Property id="${_datamodel._revisionOfId}" name="${_datamodel.revisionOf}" datatype="${_datamodel.obsolete}"></Property></Response>`))).firstElementChild;
 
-        $(ret).append(`<div class="caosdb-property-edit-value"><select><option value="${obsolete_id}" selected="selected"></option></select></div>`);
+        $(ret).find(".caosdb-f-property-value").append(`<div class="caosdb-property-edit-value"><select><option value="${obsolete_id}" selected="selected"></option></select></div>`);
 
+        logger.trace("leave _make_revision_of_property", ret);
         return ret;
     }
 
@@ -215,6 +218,7 @@ var ext_revisions = function ($, logger, edit_mode, getEntityID, transaction, _c
         // private members, exposed for testing
         _make_revision_of_property: _make_revision_of_property,
         _datamodel: _datamodel,
+        _logger: logger,
     }
 }($, log.getLogger("ext_revisions"), edit_mode, getEntityID, transaction, _createDocument);
 
diff --git a/test/core/js/modules/ext_revisions.js.js b/test/core/js/modules/ext_revisions.js.js
index bd9787afec3039984e3b067638c9ae6a9a3fd422..8b792a9c6ef7c0ad257a0a94e9b8d2b62e5d32d1 100644
--- a/test/core/js/modules/ext_revisions.js.js
+++ b/test/core/js/modules/ext_revisions.js.js
@@ -33,6 +33,7 @@ var ext_revisions_test_suite = function ($, ext_revisions, QUnit, edit_mode) {
             this.original_insert = transaction.insertEntitiesXml;
             this.original_retrieve = transaction.retrieveEntityById;
             this.original_query = query;
+            ext_revisions._logger.setLevel("trace");
         },
         beforeEach: function (assert) {
             // setup before each test
@@ -80,6 +81,7 @@ var ext_revisions_test_suite = function ($, ext_revisions, QUnit, edit_mode) {
             assert.equal(rec.id, "-1", "insert with tmp id");
             assert.equal($(rec).find("Parent").attr("name"), datamodel.obsolete, "Obsolete Parent");
             xml.firstElementChild.firstElementChild.id = "2345";
+            console.log(xml2str(xml));
             done();
             return xml;
         };