diff --git a/openfpga_flow/openfpga_shell_scripts/group_tile_clkntwk_preconfig_testbench_example_script.openfpga b/openfpga_flow/openfpga_shell_scripts/group_tile_clkntwk_preconfig_testbench_example_script.openfpga
index e7a07d61d..0ea39c4ea 100644
--- a/openfpga_flow/openfpga_shell_scripts/group_tile_clkntwk_preconfig_testbench_example_script.openfpga
+++ b/openfpga_flow/openfpga_shell_scripts/group_tile_clkntwk_preconfig_testbench_example_script.openfpga
@@ -73,7 +73,7 @@ write_preconfigured_testbench --file ./SRC --reference_benchmark_file_path ${REF
 write_sdc_disable_timing_configure_ports --file ./SDC/disable_configure_ports.sdc
 
 # Write the SDC to run timing analysis for a mapped FPGA fabric
-write_analysis_sdc --file ./SDC_analysis
+#write_analysis_sdc --file ./SDC_analysis
 
 # Finish and exit OpenFPGA
 exit
diff --git a/openfpga_flow/regression_test_scripts/basic_reg_test.sh b/openfpga_flow/regression_test_scripts/basic_reg_test.sh
index c2e6266f4..d9dfb5764 100755
--- a/openfpga_flow/regression_test_scripts/basic_reg_test.sh
+++ b/openfpga_flow/regression_test_scripts/basic_reg_test.sh
@@ -220,6 +220,7 @@ run-task basic_tests/group_config_block/group_config_block_homo_fabric_tile_glob
 
 echo -e "Module naming";
 run-task basic_tests/module_naming/using_index $@
+run-task basic_tests/module_naming/fabric_tile_clkntwk_io_subtile_using_index $@
 run-task basic_tests/module_naming/renaming_rules $@
 run-task basic_tests/module_naming/renaming_rules_strong $@
 run-task basic_tests/module_naming/renaming_rules_on_indexed_names $@
diff --git a/openfpga_flow/tasks/basic_tests/module_naming/fabric_tile_clkntwk_io_subtile_using_index/config/clk_arch_1clk_2layer.xml b/openfpga_flow/tasks/basic_tests/module_naming/fabric_tile_clkntwk_io_subtile_using_index/config/clk_arch_1clk_2layer.xml
new file mode 100644
index 000000000..2b85f88cd
--- /dev/null
+++ b/openfpga_flow/tasks/basic_tests/module_naming/fabric_tile_clkntwk_io_subtile_using_index/config/clk_arch_1clk_2layer.xml
@@ -0,0 +1,25 @@
+<clock_networks default_segment="L1" default_tap_switch="ipin_cblock" default_driver_switch="0"> 
+  <clock_network name="clk_tree_2lvl" global_port="clk[0:0]"> 
+    <spine name="spine_lvl0" start_x="0" start_y="1" end_x="2" end_y="1"> 
+      <switch_point tap="rib_lvl1_sw0_upper" x="0" y="1"/> 
+      <switch_point tap="rib_lvl1_sw0_lower" x="0" y="1"/> 
+      <switch_point tap="rib_lvl1_sw1_upper" x="1" y="1"/> 
+      <switch_point tap="rib_lvl1_sw1_lower" x="1" y="1"/> 
+      <switch_point tap="rib_lvl1_sw2_upper" x="2" y="1"/> 
+      <switch_point tap="rib_lvl1_sw2_lower" x="2" y="1"/> 
+    </spine>  
+    <spine name="rib_lvl1_sw0_upper" start_x="0" start_y="2" end_x="0" end_y="2" type="CHANY" direction="INC_DIRECTION"/>
+    <spine name="rib_lvl1_sw0_lower" start_x="0" start_y="1" end_x="0" end_y="1" type="CHANY" direction="DEC_DIRECTION"/>
+    <spine name="rib_lvl1_sw1_upper" start_x="1" start_y="2" end_x="1" end_y="3" type="CHANY" direction="INC_DIRECTION"/>
+    <spine name="rib_lvl1_sw1_lower" start_x="1" start_y="1" end_x="1" end_y="0" type="CHANY" direction="DEC_DIRECTION"/>
+    <spine name="rib_lvl1_sw2_upper" start_x="2" start_y="2" end_x="2" end_y="3" type="CHANY" direction="INC_DIRECTION"/>
+    <spine name="rib_lvl1_sw2_lower" start_x="2" start_y="1" end_x="2" end_y="0" type="CHANY" direction="DEC_DIRECTION"/>
+    <taps>
+      <all from_pin="clk[0:0]" to_pin="clb[0:0].clk[0:0]"/>
+      <all from_pin="clk[0:0]" to_pin="io_top[0:5].clk[0:0]"/>
+      <all from_pin="clk[0:0]" to_pin="io_right[0:2].clk[0:0]"/>
+      <all from_pin="clk[0:0]" to_pin="io_bottom[0:3].clk[0:0]"/>
+      <all from_pin="clk[0:0]" to_pin="io_left[0:3].clk[0:0]"/>
+    </taps>
+  </clock_network>  
+</clock_networks> 
diff --git a/openfpga_flow/tasks/basic_tests/module_naming/fabric_tile_clkntwk_io_subtile_using_index/config/task.conf b/openfpga_flow/tasks/basic_tests/module_naming/fabric_tile_clkntwk_io_subtile_using_index/config/task.conf
new file mode 100644
index 000000000..245ac9b9f
--- /dev/null
+++ b/openfpga_flow/tasks/basic_tests/module_naming/fabric_tile_clkntwk_io_subtile_using_index/config/task.conf
@@ -0,0 +1,42 @@
+# = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
+# Configuration file for running experiments
+# = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
+# timeout_each_job : FPGA Task script splits fpga flow into multiple jobs
+# Each job execute fpga_flow script on combination of architecture & benchmark
+# timeout_each_job is timeout for each job
+# = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
+
+[GENERAL]
+run_engine=openfpga_shell
+power_tech_file = ${PATH:OPENFPGA_PATH}/openfpga_flow/tech/PTM_45nm/45nm.xml
+power_analysis = false
+spice_output=false
+verilog_output=true
+timeout_each_job = 20*60
+fpga_flow=yosys_vpr
+
+[OpenFPGA_SHELL]
+openfpga_shell_template=${PATH:OPENFPGA_PATH}/openfpga_flow/openfpga_shell_scripts/group_tile_clkntwk_preconfig_testbench_example_script.openfpga
+openfpga_arch_file=${PATH:OPENFPGA_PATH}/openfpga_flow/openfpga_arch/k4_N4_40nm_ClkNtwk_registerable_io_cc_openfpga.xml
+openfpga_sim_setting_file=${PATH:OPENFPGA_PATH}/openfpga_flow/openfpga_simulation_settings/fixed_sim_openfpga.xml
+openfpga_vpr_extra_options=
+openfpga_pb_pin_fixup_command=
+openfpga_vpr_device=2x2
+openfpga_vpr_route_chan_width=40
+openfpga_group_tile_config_file=${PATH:TASK_DIR}/config/tile_config.xml --name_module_using_index
+openfpga_verilog_testbench_options=--explicit_port_mapping
+openfpga_clock_arch_file=${PATH:TASK_DIR}/config/clk_arch_1clk_2layer.xml
+
+[ARCHITECTURES]
+arch0=${PATH:OPENFPGA_PATH}/openfpga_flow/vpr_arch/k4_N4_tileable_PerimeterCb_ClkNtwk_registerable_io_40nm.xml
+
+[BENCHMARKS]
+bench0=${PATH:OPENFPGA_PATH}/openfpga_flow/benchmarks/micro_benchmark/and2_pipelined/and2_pipelined.v
+
+[SYNTHESIS_PARAM]
+bench_read_verilog_options_common = -nolatches
+bench0_top = and2_pipelined
+
+[SCRIPT_PARAM_MIN_ROUTE_CHAN_WIDTH]
+end_flow_with_test=
+vpr_fpga_verilog_formal_verification_top_netlist=
diff --git a/openfpga_flow/tasks/basic_tests/module_naming/fabric_tile_clkntwk_io_subtile_using_index/config/tile_config.xml b/openfpga_flow/tasks/basic_tests/module_naming/fabric_tile_clkntwk_io_subtile_using_index/config/tile_config.xml
new file mode 100644
index 000000000..1a1f3f6e8
--- /dev/null
+++ b/openfpga_flow/tasks/basic_tests/module_naming/fabric_tile_clkntwk_io_subtile_using_index/config/tile_config.xml
@@ -0,0 +1 @@
+<tiles style="top_left"/>