diff --git a/src/ansys/dpf/core/dpf_operator.py b/src/ansys/dpf/core/dpf_operator.py
index ed5f69182ad..162b4675626 100644
--- a/src/ansys/dpf/core/dpf_operator.py
+++ b/src/ansys/dpf/core/dpf_operator.py
@@ -279,14 +279,8 @@ def connect(self, pin, inpt, pin_out=0):
         elif isinstance(inpt, list):
             from ansys.dpf.core import collection
 
-            if server_meet_version("3.0", self._server):
-                inpt = collection.CollectionBase.integral_collection(inpt, self._server)
-                self._api.operator_connect_collection_as_vector(self, pin, inpt)
-            else:
-                if all(isinstance(x, int) for x in inpt):
-                    self._api.operator_connect_vector_int(self, pin, inpt, len(inpt))
-                else:
-                    self._api.operator_connect_vector_double(self, pin, inpt, len(inpt))
+            inpt = collection.CollectionBase.integral_collection(inpt, self._server)
+            self._api.operator_connect_collection_as_vector(self, pin, inpt)
         elif isinstance(inpt, dict):
             from ansys.dpf.core import label_space
 
diff --git a/src/ansys/dpf/core/meshed_region.py b/src/ansys/dpf/core/meshed_region.py
index 7b278657dcd..29fb7e2ff9b 100644
--- a/src/ansys/dpf/core/meshed_region.py
+++ b/src/ansys/dpf/core/meshed_region.py
@@ -406,23 +406,8 @@ def named_selection(
             A scoping containing the IDs of the entities in the named selection.
             The location depends on the type of entities targeted by the named selection.
         """
-        if server_meet_version("2.1", self._server):
-            out = self._api.meshed_region_get_named_selection_scoping(self, named_selection)
-            out_scoping = scoping.Scoping(scoping=out, server=self._server)
-        else:
-            if hasattr(self, "_stream_provider"):
-                from ansys.dpf.core.dpf_operator import Operator
-
-                op = Operator("scoping_provider_by_ns", server=self._server)
-                op.connect(1, named_selection)
-                op.connect(3, self._stream_provider, 0)
-                out_scoping = op.get_output(0, types.scoping)
-            else:
-                raise Exception(
-                    "Getting a named selection from a meshed region is "
-                    "only implemented for meshed region created from a "
-                    "model for server version 2.0. Please update your server."
-                )
+        out = self._api.meshed_region_get_named_selection_scoping(self, named_selection)
+        out_scoping = scoping.Scoping(scoping=out, server=self._server)
         if server:
             # Copy the scoping to another server
             out_scoping = out_scoping.deep_copy(server=server)
diff --git a/src/ansys/dpf/core/session.py b/src/ansys/dpf/core/session.py
index bf2f6f7f83a..bb2166366ef 100644
--- a/src/ansys/dpf/core/session.py
+++ b/src/ansys/dpf/core/session.py
@@ -231,8 +231,7 @@ def __init__(self, server=None):
             self._internal_obj = self._api.session_new()
 
         self._handler = None
-        if server_meet_version("3.0", server):
-            self.add_progress_system()
+        self.add_progress_system()
 
         self._released = False
 
diff --git a/src/ansys/dpf/core/workflow.py b/src/ansys/dpf/core/workflow.py
index 2e9b8eaa357..68988f81925 100644
--- a/src/ansys/dpf/core/workflow.py
+++ b/src/ansys/dpf/core/workflow.py
@@ -217,14 +217,8 @@ def connect(self, pin_name, inpt, pin_out=0):
         elif isinstance(inpt, list):
             from ansys.dpf.core import collection
 
-            if server_meet_version("3.0", self._server):
-                inpt = collection.CollectionBase.integral_collection(inpt, self._server)
-                self._api.work_flow_connect_collection_as_vector(self, pin_name, inpt)
-            else:
-                if all(isinstance(x, int) for x in inpt):
-                    self._api.work_flow_connect_vector_int(self, pin_name, inpt, len(inpt))
-                else:
-                    self._api.work_flow_connect_vector_double(self, pin_name, inpt, len(inpt))
+            inpt = collection.CollectionBase.integral_collection(inpt, self._server)
+            self._api.work_flow_connect_collection_as_vector(self, pin_name, inpt)
         elif isinstance(inpt, dict):
             from ansys.dpf.core import label_space
 
@@ -450,7 +444,7 @@ def get_output(self, pin_name, output_type):
         output_type : core.type enum
             Type of the requested output.
         """
-        if server_meet_version("3.0", self._server) and self.progress_bar:
+        if self.progress_bar:
             # handle progress bar
             self._server.session.add_workflow(self, "workflow")
             self._progress_thread = self._server.session.listen_to_progress()
diff --git a/tests/test_cache.py b/tests/test_cache.py
index 76dedaff63a..6b3517aca20 100644
--- a/tests/test_cache.py
+++ b/tests/test_cache.py
@@ -78,7 +78,4 @@
 #     res_info.unit_system
 #     assert len(res_info._cache.cached) == 1
 #     res_info.physics_type
-#     if server_meet_version("3.0", ds._server):
-#         assert len(res_info._cache.cached) == 2
-#     else:
-#         assert len(res_info._cache.cached) == 1
+#     assert len(res_info._cache.cached) == 2