diff --git a/corepos/db/office_arch/model.py b/corepos/db/office_arch/model.py
index 49b0bbd..bf01a4d 100644
--- a/corepos/db/office_arch/model.py
+++ b/corepos/db/office_arch/model.py
@@ -2,7 +2,7 @@
 ################################################################################
 #
 #  pyCOREPOS -- Python Interface to CORE POS
-#  Copyright © 2018-2024 Lance Edgar
+#  Copyright © 2018-2023 Lance Edgar
 #
 #  This file is part of pyCOREPOS.
 #
@@ -26,25 +26,14 @@ CORE Office "arch" data model
 
 from sqlalchemy import orm
 
-from corepos.db.office_trans.model import DTransactionBase, DLogBase
+from corepos.db.office_trans.model import TransactionDetailBase
 
 
 Base = orm.declarative_base()
 
 
-class BigArchive(DTransactionBase, Base):
+class TransactionDetail(TransactionDetailBase, Base):
     """
-    Represents a record from ``bigArchive`` table.
+    Represents a POS transaction detail record.
     """
     __tablename__ = 'bigArchive'
-
-
-# TODO: deprecate / remove this
-TransactionDetail = BigArchive
-
-
-class DLogBig(DLogBase, Base):
-    """
-    Represents a record from ``dlogBig`` view.
-    """
-    __tablename__ = 'dlogBig'
diff --git a/corepos/db/office_op/model.py b/corepos/db/office_op/model.py
index 5e9a34a..8590375 100644
--- a/corepos/db/office_op/model.py
+++ b/corepos/db/office_op/model.py
@@ -169,25 +169,6 @@ class Store(Base):
         return self.description or ""
 
 
-class MasterSuperDepartment(Base):
-    """
-    A department may belong to more than one superdepartment, but has
-    one "master" superdepartment.  This avoids duplicating rows in
-    some reports.  By convention, a department's "master"
-    superdepartment is the one with the lowest superID.
-    """
-    __tablename__ = 'MasterSuperDepts'
-
-    super_id = sa.Column('superID', sa.Integer(), primary_key=True, autoincrement=False, nullable=False)
-
-    department_id = sa.Column('dept_ID', sa.Integer(), primary_key=True, autoincrement=False, nullable=False)
-
-    super_name = sa.Column(sa.String(length=50), nullable=True)
-
-    def __str__(self):
-        return self.super_name or ""
-
-
 class SuperDepartment(Base):
     """
     Represents a "super" (parent/child) department mapping.
@@ -1037,9 +1018,6 @@ class MemberType(Base):
 
     ssi = sa.Column(sa.Boolean(), nullable=True)
 
-    ignoreSales = sa.Column(sa.Boolean(), nullable=True, default=False)
-    ignore_sales = orm.synonym('ignoreSales')
-
     # TODO: this was apparently added "recently" - isn't present in all DBs
     # (need to figure out how to conditionally include it in model?)
     # sales_code = sa.Column('salesCode', sa.Integer(), nullable=True)
diff --git a/corepos/db/office_trans/model.py b/corepos/db/office_trans/model.py
index b4659cd..2848af5 100644
--- a/corepos/db/office_trans/model.py
+++ b/corepos/db/office_trans/model.py
@@ -2,7 +2,7 @@
 ################################################################################
 #
 #  pyCOREPOS -- Python Interface to CORE POS
-#  Copyright © 2018-2024 Lance Edgar
+#  Copyright © 2018-2023 Lance Edgar
 #
 #  This file is part of pyCOREPOS.
 #
@@ -68,7 +68,7 @@ class EquityLiveBalance(Base):
     start_date = sa.Column('startdate', sa.DateTime(), nullable=True)
 
 
-class TransactionDetailBase:
+class TransactionDetailBase(object):
     """
     Represents a POS transaction detail record.
     """
@@ -86,12 +86,10 @@ class TransactionDetailBase:
     transaction_number = sa.Column('trans_no', sa.Integer(), nullable=True)
     transaction_type = sa.Column('trans_type', sa.String(length=1), nullable=True)
     transaction_subtype = sa.Column('trans_subtype', sa.String(length=2), nullable=True)
+    transaction_status = sa.Column('trans_status', sa.String(length=1), nullable=True)
 
-    trans_status = sa.Column(sa.String(length=1), nullable=True)
-
-    @declared_attr
-    def transaction_status(self):
-        return orm.synonym('trans_status')
+    # timestamps
+    date_time = sa.Column('datetime', sa.DateTime(), nullable=True)
 
     # cashier
     employee_number = sa.Column('emp_no', sa.Integer(), nullable=True)
@@ -117,11 +115,7 @@ class TransactionDetailBase:
 
     cost = sa.Column(sa.Numeric(precision=10, scale=2), nullable=True)
 
-    unitPrice = sa.Column('unitPrice', sa.Numeric(precision=10, scale=2), nullable=True)
-
-    @declared_attr
-    def unit_price(self):
-        return orm.synonym('unitPrice')
+    unit_price = sa.Column('unitPrice', sa.Numeric(precision=10, scale=2), nullable=True)
 
     total = sa.Column(sa.Numeric(precision=10, scale=2), nullable=True)
 
@@ -167,22 +161,8 @@ class TransactionDetailBase:
         return self.description or ''
 
 
-class DTransactionBase(TransactionDetailBase):
-
-    date_time = sa.Column('datetime', sa.DateTime(), nullable=True)
-
-
-class DLogBase(TransactionDetailBase):
-
-    date_time = sa.Column('tdate', sa.DateTime(), nullable=True)
-
-
-class DTransaction(DTransactionBase, Base):
+class TransactionDetail(TransactionDetailBase, Base):
     """
-    Represents a record from ``dtransactions`` table.
+    Represents a POS transaction detail record.
     """
     __tablename__ = 'dtransactions'
-
-
-# TODO: deprecate / remove this
-TransactionDetail = DTransaction