diff --git a/neutron_vpnaas/db/migration/alembic_migrations/versions/liberty/contract/2c82e782d734_drop_tenant_id_in_cisco_csr_identifier_.py b/neutron_vpnaas/db/migration/alembic_migrations/versions/liberty/contract/2c82e782d734_drop_tenant_id_in_cisco_csr_identifier_.py
index 757f4a7b3..0cd3b733b 100644
--- a/neutron_vpnaas/db/migration/alembic_migrations/versions/liberty/contract/2c82e782d734_drop_tenant_id_in_cisco_csr_identifier_.py
+++ b/neutron_vpnaas/db/migration/alembic_migrations/versions/liberty/contract/2c82e782d734_drop_tenant_id_in_cisco_csr_identifier_.py
@@ -22,6 +22,7 @@ Create Date: 2015-08-20 15:17:09.897944
 """
 
 from alembic import op
+import sqlalchemy as sa
 
 from neutron.db import migration
 
@@ -35,4 +36,7 @@ neutron_milestone = [migration.LIBERTY]
 
 
 def upgrade():
+    insp = sa.inspect(op.get_bind())
+    if 'cisco_csr_identifier_map' not in insp.get_table_names():
+        return
     op.drop_column('cisco_csr_identifier_map', 'tenant_id')
diff --git a/neutron_vpnaas/db/migration/alembic_migrations/versions/liberty/contract/333dfd6afaa2_populate_vpn_service_table_fields.py b/neutron_vpnaas/db/migration/alembic_migrations/versions/liberty/contract/333dfd6afaa2_populate_vpn_service_table_fields.py
index 412e449f8..d8cf05051 100644
--- a/neutron_vpnaas/db/migration/alembic_migrations/versions/liberty/contract/333dfd6afaa2_populate_vpn_service_table_fields.py
+++ b/neutron_vpnaas/db/migration/alembic_migrations/versions/liberty/contract/333dfd6afaa2_populate_vpn_service_table_fields.py
@@ -58,6 +58,9 @@ def _migrate_external_ips(engine):
     addresses for an IP version, then only the first one will
     be stored (the same as the reference driver does).
     """
+    insp = sa.inspect(engine)
+    if 'cisco_csr_identifier_map' not in insp.get_table_names():
+        return
     session = sa.orm.Session(bind=engine.connect())
     services = session.query(VPNService).all()
     for service in services:
diff --git a/neutron_vpnaas/db/migration/alembic_migrations/versions/liberty/contract/56893333aa52_fix_identifier_map_fk.py b/neutron_vpnaas/db/migration/alembic_migrations/versions/liberty/contract/56893333aa52_fix_identifier_map_fk.py
index 0e8a534c1..a31d8b1fe 100644
--- a/neutron_vpnaas/db/migration/alembic_migrations/versions/liberty/contract/56893333aa52_fix_identifier_map_fk.py
+++ b/neutron_vpnaas/db/migration/alembic_migrations/versions/liberty/contract/56893333aa52_fix_identifier_map_fk.py
@@ -38,6 +38,9 @@ branch_labels = (cli.CONTRACT_BRANCH,)
 
 
 def upgrade():
+    insp = sa.inspect(op.get_bind())
+    if 'cisco_csr_identifier_map' not in insp.get_table_names():
+        return
     # re-size existing data if necessary
     identifier_map = table('cisco_csr_identifier_map',
                            column('ipsec_site_conn_id', sa.String(36)))
diff --git a/neutron_vpnaas/db/migration/alembic_migrations/versions/rocky/contract/e50641731f1a_drop_cisco_csr_identifier_map_table.py b/neutron_vpnaas/db/migration/alembic_migrations/versions/rocky/contract/e50641731f1a_drop_cisco_csr_identifier_map_table.py
index 025026c48..902e61165 100644
--- a/neutron_vpnaas/db/migration/alembic_migrations/versions/rocky/contract/e50641731f1a_drop_cisco_csr_identifier_map_table.py
+++ b/neutron_vpnaas/db/migration/alembic_migrations/versions/rocky/contract/e50641731f1a_drop_cisco_csr_identifier_map_table.py
@@ -22,6 +22,8 @@ Create Date: 2018-02-28 10:28:59.846652
 """
 
 from alembic import op
+import sqlalchemy as sa
+
 from neutron.db import migration
 
 # revision identifiers, used by Alembic.
@@ -34,4 +36,7 @@ neutron_milestone = [migration.ROCKY, migration.STEIN,
 
 
 def upgrade():
+    insp = sa.inspect(op.get_bind())
+    if 'cisco_csr_identifier_map' not in insp.get_table_names():
+        return
     op.drop_table('cisco_csr_identifier_map')