diff --git a/CHANGELOG.md b/CHANGELOG.md
index ccc62cb..39309fe 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,13 @@ All notable changes to pyCOREPOS will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## v0.3.4 (2025-01-15)
+
+### Fix
+
+- misc. cleanup for sales batch models
+- add more enums for batch discount type, editor UI
+
 ## v0.3.3 (2025-01-13)
 
 ### Fix
diff --git a/corepos/db/office_op/model.py b/corepos/db/office_op/model.py
index 16bbc57..6087f67 100644
--- a/corepos/db/office_op/model.py
+++ b/corepos/db/office_op/model.py
@@ -1636,7 +1636,9 @@ class BatchType(Base):
     """
     __tablename__ = 'batchType'
 
-    id = sa.Column('batchTypeID', sa.Integer(), primary_key=True, autoincrement=False, nullable=False)
+    # nb. this is *not* autoincrement for some reason; must
+    # calculate new ID manually based on max existing
+    id = sa.Column('batchTypeID', sa.Integer(), nullable=False, primary_key=True, autoincrement=False)
 
     description = sa.Column('typeDesc', sa.String(length=50), nullable=True)
 
@@ -1646,7 +1648,7 @@ class BatchType(Base):
 
     special_order_eligible = sa.Column('specialOrderEligible', sa.Boolean(), nullable=True, default=True)
 
-    editor_ui = sa.Column('editorUI', sa.Boolean(), nullable=True, default=True)
+    editor_ui = sa.Column('editorUI', sa.SmallInteger(), nullable=True, default=True)
 
     allow_single_store = sa.Column('allowSingleStore', sa.Boolean(), nullable=True, default=False)
 
@@ -1661,9 +1663,6 @@ class Batch(Base):
     Represents a batch.
     """
     __tablename__ = 'batches'
-    __table_args__ = (
-        sa.ForeignKeyConstraint(['batchType'], ['batchType.batchTypeID']),
-    )
 
     id = sa.Column('batchID', sa.Integer(), primary_key=True, autoincrement=True, nullable=False)
 
@@ -1673,7 +1672,8 @@ class Batch(Base):
 
     name = sa.Column('batchName', sa.String(length=80), nullable=True)
 
-    batch_type_id = sa.Column('batchType', sa.Integer(), nullable=True)
+    batch_type_id = sa.Column('batchType', sa.Integer(),
+                              sa.ForeignKey('batchType.batchTypeID'), nullable=True)
     batch_type = orm.relationship(BatchType)
 
     discount_type = sa.Column('discountType', sa.Integer(), nullable=True)
@@ -1695,16 +1695,18 @@ class BatchItem(Base):
     Represents a batch "list" item.
     """
     __tablename__ = 'batchList'
-    __table_args__ = (
-        sa.ForeignKeyConstraint(['batchID'], ['batches.batchID']),
-    )
 
     id = sa.Column('listID', sa.Integer(), primary_key=True, autoincrement=True, nullable=False)
 
-    batch_id = sa.Column('batchID', sa.Integer(), nullable=True)
+    batch_id = sa.Column('batchID', sa.Integer(),
+                         sa.ForeignKey('batches.batchID'), nullable=True)
     batch = orm.relationship(Batch, backref=orm.backref('items'))
 
     upc = sa.Column(sa.String(length=13), nullable=True)
+    product = orm.relationship(
+        Product,
+        primaryjoin=Product.upc == upc,
+        foreign_keys=[upc])
 
     sale_price = sa.Column('salePrice', sa.Numeric(precision=9, scale=3), nullable=True)
 
diff --git a/corepos/enum.py b/corepos/enum.py
index 28e33ea..93780c3 100644
--- a/corepos/enum.py
+++ b/corepos/enum.py
@@ -34,14 +34,33 @@ class CoreDbType(str, Enum):
     office_arch = 'office_arch'
 
 
+BATCH_DISCOUNT_TYPE_TRACKING            = -1
 BATCH_DISCOUNT_TYPE_PRICE_CHANGE        = 0
 BATCH_DISCOUNT_TYPE_SALE_EVERYONE       = 1
 BATCH_DISCOUNT_TYPE_SALE_RESTRICTED     = 2
+BATCH_DISCOUNT_TYPE_SLIDING_PERCENT     = 3
+BATCH_DISCOUNT_TYPE_SLIDING_AMOUNT      = 5
 
 BATCH_DISCOUNT_TYPE = OrderedDict([
-    (BATCH_DISCOUNT_TYPE_PRICE_CHANGE,          "Price Change"),
+    (BATCH_DISCOUNT_TYPE_PRICE_CHANGE,          "None (Change regular price)"),
     (BATCH_DISCOUNT_TYPE_SALE_EVERYONE,         "Sale for everyone"),
-    (BATCH_DISCOUNT_TYPE_SALE_RESTRICTED,       "Member/Owner only sale"),
+    (BATCH_DISCOUNT_TYPE_SALE_RESTRICTED,       "Sale for Members"),
+    (BATCH_DISCOUNT_TYPE_SLIDING_PERCENT,       "Sliding % Off for Members"),
+    (BATCH_DISCOUNT_TYPE_SLIDING_AMOUNT,        "Sliding $ Off for Members"),
+    (BATCH_DISCOUNT_TYPE_TRACKING,              "Tracking (does not change any prices)"),
+])
+
+
+BATCH_EDITOR_UI_STANDARD                = 1
+BATCH_EDITOR_UI_PAIRED_SALE             = 2
+BATCH_EDITOR_UI_PARTIAL                 = 3
+BATCH_EDITOR_UI_TRACKING                = 4
+
+BATCH_EDITOR_UI = OrderedDict([
+    (BATCH_EDITOR_UI_STANDARD,                  "Standard"),
+    (BATCH_EDITOR_UI_PAIRED_SALE,               "Paired Sale"),
+    (BATCH_EDITOR_UI_PARTIAL,                   "Partial"),
+    (BATCH_EDITOR_UI_TRACKING,                  "Tracking"),
 ])
 
 
diff --git a/pyproject.toml b/pyproject.toml
index a59e830..143843f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,7 +6,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "pyCOREPOS"
-version = "0.3.3"
+version = "0.3.4"
 description = "Python Interface to CORE POS"
 readme = "README.md"
 authors = [{name = "Lance Edgar", email = "lance@edbob.org"}]