diff --git a/octodns/provider/dyn.py b/octodns/provider/dyn.py
index 9e951fb..31a715f 100644
--- a/octodns/provider/dyn.py
+++ b/octodns/provider/dyn.py
@@ -1248,13 +1248,14 @@ class DynProvider(BaseProvider):
             if new.geo:
                 # New record is a geo record
                 self.log.info('_mod_dynamic_Update: %s to geo', new.fqdn)
-                self._mod_geo_Create(dyn_zone, change)
+                # Convert the TD over to a geo
+                self._mod_geo_Update(dyn_zone, change)
             else:
                 # New record doesn't have dynamic, we're going from a TD to a
                 # regular record
                 self.log.info('_mod_dynamic_Update: %s to plain', new.fqdn)
                 self._mod_Create(dyn_zone, change)
-            self._mod_dynamic_Delete(dyn_zone, change)
+                self._mod_dynamic_Delete(dyn_zone, change)
             return
         try:
             td = self.traffic_directors[new.fqdn][new._type]
diff --git a/tests/test_octodns_provider_dyn.py b/tests/test_octodns_provider_dyn.py
index 68a8196..4a41698 100644
--- a/tests/test_octodns_provider_dyn.py
+++ b/tests/test_octodns_provider_dyn.py
@@ -2400,7 +2400,7 @@ class TestDynProviderDynamic(TestCase):
         provider = DynProvider('test', 'cust', 'user', 'pass',
                                traffic_directors_enabled=True)
 
-        # update of an existing td
+        # update of an existing dynamic td
 
         # pre-populate the cache with our mock td
         provider._traffic_directors = {
@@ -2424,24 +2424,21 @@ class TestDynProviderDynamic(TestCase):
         provider = DynProvider('test', 'cust', 'user', 'pass',
                                traffic_directors_enabled=True)
 
-        # convert a td to a geo record
+        # convert a dynamic td to a geo record
 
-        provider._mod_geo_Create = MagicMock()
-        provider._mod_dynamic_Delete = MagicMock()
+        provider._mod_geo_Update = MagicMock()
 
         change = Update(self.dynamic_a_record, self.geo_a_record)
         provider._mod_dynamic_Update(42, change)
         # should have seen a call to create the new geo record
-        provider._mod_geo_Create.assert_called_once_with(42, change)
-        # should have seen a call to delete the old td record
-        provider._mod_dynamic_Delete.assert_called_once_with(42, change)
+        provider._mod_geo_Update.assert_called_once_with(42, change)
 
     @patch('dyn.core.SessionEngine.execute')
     def test_mod_dynamic_update_dynamic_regular(self, _):
         provider = DynProvider('test', 'cust', 'user', 'pass',
                                traffic_directors_enabled=True)
 
-        # convert a td to a regular record
+        # convert a dynamic td to a regular record
 
         provider._mod_Create = MagicMock()
         provider._mod_dynamic_Delete = MagicMock()
@@ -2458,7 +2455,7 @@ class TestDynProviderDynamic(TestCase):
         provider = DynProvider('test', 'cust', 'user', 'pass',
                                traffic_directors_enabled=True)
 
-        # convert a geo record to a td
+        # convert a geo record to a dynamic td
 
         provider._mod_dynamic_Create = MagicMock()
         provider._mod_geo_Delete = MagicMock()
@@ -2475,7 +2472,7 @@ class TestDynProviderDynamic(TestCase):
         provider = DynProvider('test', 'cust', 'user', 'pass',
                                traffic_directors_enabled=True)
 
-        # convert a regular record to a td
+        # convert a regular record to a dynamic td
 
         provider._mod_dynamic_Create = MagicMock()
         provider._mod_Delete = MagicMock()