diff --git a/sapl/legacy/migracao_dados.py b/sapl/legacy/migracao_dados.py
index 96bb0905f..24ee536e0 100644
--- a/sapl/legacy/migracao_dados.py
+++ b/sapl/legacy/migracao_dados.py
@@ -87,15 +87,24 @@ for a1, s1 in name_sets:
 # RENAMES ###################################################################
 
 MODEL_RENAME_PATTERN = re.compile('(.+) \((.+)\)')
+MODEL_RENAME_INCLUDE_PATTERN = re.compile('<(.+)>')
 
 
 def get_renames():
     field_renames = {}
     model_renames = {}
+    includes = {}
     for app in appconfs:
         app_rename_data = yaml.load(
             pkg_resources.resource_string(app.module.__name__, 'legacy.yaml'))
         for model_name, renames in app_rename_data.items():
+            # armazena ou substitui includes
+            if MODEL_RENAME_INCLUDE_PATTERN.match(model_name):
+                includes[model_name] = renames
+                continue
+            elif isinstance(renames, str):
+                renames = includes[renames]
+            # detecta mudança de nome
             match = MODEL_RENAME_PATTERN.match(model_name)
             if match:
                 model_name, old_name = match.groups()
@@ -106,19 +115,6 @@ def get_renames():
                 model_renames[model] = old_name
             field_renames[model] = renames
 
-    # collect renames from parent classes
-    for model, renames in field_renames.items():
-        if any(parent in field_renames for parent in model.__mro__[1:]):
-            renames = {}
-            for parent in reversed(model.__mro__):
-                if parent in field_renames:
-                    renames.update(field_renames[parent])
-            field_renames[model] = renames
-
-    # remove abstract classes
-    field_renames = {m: r for m, r in field_renames.items()
-                     if not m._meta.abstract}
-
     return field_renames, model_renames
 
 
diff --git a/sapl/sessao/legacy.yaml b/sapl/sessao/legacy.yaml
index e7b55095a..6df4dd90d 100644
--- a/sapl/sessao/legacy.yaml
+++ b/sapl/sessao/legacy.yaml
@@ -15,7 +15,7 @@ SessaoPlenaria:
   url_audio: url_audio
   url_video: url_video
 
-AbstractOrdemDia:
+<AbstractOrdemDia>:
   data_ordem: dat_ordem
   materia: cod_materia
   numero_ordem: num_ordem
@@ -24,7 +24,7 @@ AbstractOrdemDia:
   sessao_plenaria: cod_sessao_plen
   tipo_votacao: tip_votacao
 
-ExpedienteMateria: {}
+ExpedienteMateria: <AbstractOrdemDia>
 
 TipoExpediente:
   nome: nom_expediente
@@ -39,17 +39,17 @@ IntegranteMesa (MesaSessaoPlenaria):
   parlamentar: cod_parlamentar
   sessao_plenaria: cod_sessao_plen
 
-AbstractOrador:
+<AbstractOrador>:
   numero_ordem: num_ordem
   parlamentar: cod_parlamentar
   sessao_plenaria: cod_sessao_plen
   url_discurso: url_discurso
 
-Orador (Oradores): {}
+Orador (Oradores): <AbstractOrador>
 
-OradorExpediente (OradoresExpediente): {}
+OradorExpediente (OradoresExpediente): <AbstractOrador>
 
-OrdemDia: {}
+OrdemDia: <AbstractOrdemDia>
 
 PresencaOrdemDia (OrdemDiaPresenca):
   parlamentar: cod_parlamentar