diff --git a/integrationtests/test.py b/integrationtests/test.py
index a5654fb5ba9d3d7caa40ff73725c253118ee99c2..b84e9f888abb8017cd5fde2f7430371e6562a377 100755
--- a/integrationtests/test.py
+++ b/integrationtests/test.py
@@ -153,14 +153,46 @@ def test_identifiable_update(clear_database, usemodel, ident, crawler):
     cr = Crawler(debug=True, identifiableAdapter=ident)
     crawl_standard_test_directory(cr)
 
+    # Test the addition of a single property:
     l = cr.updateList
     for record in l:
-        if record.parents[0].name == "Measurement":
+        if (record.parents[0].name == "Measurement" and
+            record.get_property("date").value == "2020-01-03"):
             # maybe a bit weird, but add an email address to a measurement
             record.add_property(name="email", value="testperson@testaccount.test")
             print("one change")
             break
-    breakpoint()
     ins, ups = cr.synchronize()
     assert len(ins) == 0
     assert len(ups) == 1
+
+    
+    # Test the change within one property:
+    cr = Crawler(debug=True, identifiableAdapter=ident)
+    crawl_standard_test_directory(cr)
+    l = cr.updateList
+    for record in l:
+        if (record.parents[0].name == "Measurement" and
+            record.get_property("date").value == "2020-01-03"):
+            record.add_property(name="email", value="testperson@coolmail.test")
+            print("one change")
+            break
+    ins, ups = cr.synchronize()
+    assert len(ins) == 0
+    assert len(ups) == 1
+
+    # Changing the date should result in a new insertion:
+    cr = Crawler(debug=True, identifiableAdapter=ident)
+    crawl_standard_test_directory(cr)
+    l = cr.updateList
+    for record in l:
+        if (record.parents[0].name == "Measurement" and
+            record.get_property("date").value == "2020-01-03"):
+            record.add_property(name="email", value="testperson@coolmail.test")
+            record.get_property("date").value = "2012-01-02"
+            print("one change")
+            break
+    breakpoint()
+    ins, ups = cr.synchronize()
+    assert len(ins) == 1
+    assert len(ups) == 0