=== modified file 'project/project.py'
--- project/project.py	2013-06-17 13:38:25 +0000
+++ project/project.py	2014-03-05 05:11:47 +0000
@@ -343,12 +343,44 @@
         if context is None:
             context = {}
         map_task_id = {}
+        map_phase_id = {}
         task_obj = self.pool.get('project.task')
+        phase_obj = self.pool.get('project.phase')
         proj = self.browse(cr, uid, old_project_id, context=context)
+        
+        proj_data = self.read(cr, uid, old_project_id, [], context=context)
+        phase_id = []
+        temp_task_ids = []
+        if proj_data.get('phase_ids', False):
+            for phase in proj.phase_ids:
+                map_phase_id[phase.id] =  phase_obj.copy(cr, uid, phase.id, {'project_id' : new_project_id, 'task_ids': []}, context=context)
+                for task in phase.task_ids:
+                    map_task_id[task.id] =  task_obj.copy(cr, uid, task.id, {'phase_id' : map_phase_id[phase.id]}, context=context)
+                    temp_task_ids.append(task.id)
+                    temp_task_ids.append(map_task_id[task.id])
         for task in proj.tasks:
-            map_task_id[task.id] =  task_obj.copy(cr, uid, task.id, {}, context=context)
-        self.write(cr, uid, [new_project_id], {'tasks':[(6,0, map_task_id.values())]})
-        task_obj.duplicate_task(cr, uid, map_task_id, context=context)
+            if task.id not in temp_task_ids:
+                map_task_id[task.id] = task_obj.copy(cr, uid, task.id, {}, context=context)
+                temp_task_ids.append(task.id)
+#            task_obj._generate_task(cr, uid, phase_obj.browse(cr, uid, map_phase_id[phase.id], context=context).task_ids, ident=8, context=context)
+#            task_obj._generate_task(cr, uid, phase_obj.browse(cr, uid, map_phase_id[phase.id], context=context).task_ids, ident=8, context=context)
+        
+#        for task in proj.tasks:
+#            map_task_id[task.id] =  task_obj.copy(cr, uid, task.id, {}, context=context)
+#            print "task.phase_id.id ",task.phase_id.id
+#        asdnasflasnfklasnl
+#        old_phase_id.append(task.phase_id.id)
+#        if task.phase_id.id not in old_phase_id:
+#            map_phase_id[phase.id] =  phase_obj.copy(cr, uid, task.phase_id.id, {}, context=context)
+#            task_obj.write(cr, uid, map_task_id[task.id], {'phase_id' : map_phase_id[phase.id]}, context=context)
+#        for phase in map_phase_id:
+#            phase_id.append(phase_obj.browse(cr, uid, phase, context=context))
+#            
+#        phase_obj.generate_phase(cr, uid, phase_id, context=context)
+        if proj_data.get('phase_ids', False):
+            self.write(cr, uid, [new_project_id], {'tasks' : [(6, 0, map_task_id.values())], 'phase_ids' : [(6, 0, map_phase_id.values())]})
+        else:
+            self.write(cr, uid, [new_project_id], {'tasks' : [(6, 0, map_task_id.values())]})
         return True
 
     def copy(self, cr, uid, id, default=None, context=None):
@@ -358,9 +390,12 @@
             default = {}
 
         context['active_test'] = False
+        context.update({'phase_ids' : []})
+        context.update({'tasks' : []})
         default['state'] = 'open'
         default['line_ids'] = []
         default['tasks'] = []
+        default['phase_ids'] = []
         default.pop('alias_name', None)
         default.pop('alias_id', None)
         proj = self.browse(cr, uid, id, context=context)