One way to do it is on list_2 add a Custom Transaction
Developer Toolbox->Server Behaviors->Forms->Advanced->Custom Transaction
Specify your DB
Select Starter Transaction ->Form Variable -> Name it KT_Back1
"When Finished" -> Select desired page. form_2
Make sure other tabs are blank->Hit Ok
Now add the button to list_2
<input type="submit" name="KT_Back1" value="<?php echo NXT_getResource("Cancel_FB"); ?>" onclick="return UNI_navigateCancel(event, 'includes/nxt/back.php')" />
if your includes folder is not structured how you see in the UNI_navigateCancel function then you will need to fix that.
thanks for your quick response.
I followed your suggestion. Everything seems to work.