diff --git a/requirements-base.txt b/requirements-base.txt
index 8401f8a43b2c..2cde15f02d2f 100644
--- a/requirements-base.txt
+++ b/requirements-base.txt
@@ -124,7 +124,7 @@ frozenlist==1.4.0
     #   aiosignal
 google-api-core==2.11.1
     # via google-api-python-client
-google-api-python-client==2.97.0
+google-api-python-client==2.98.0
     # via -r requirements-base.in
 google-auth==2.22.0
     # via
@@ -269,7 +269,7 @@ preshed==3.0.8
     # via
     #   spacy
     #   thinc
-protobuf==4.24.2
+protobuf==4.24.3
     # via
     #   -r requirements-base.in
     #   google-api-core
@@ -308,7 +308,7 @@ pyrate-limiter==2.10.0
     # via schemathesis
 pyrsistent==0.19.3
     # via jsonschema
-pytest==7.4.1
+pytest==7.4.2
     # via
     #   pytest-subtests
     #   schemathesis
diff --git a/requirements-dev.txt b/requirements-dev.txt
index cd2cce4bed27..6d1af776d602 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -34,7 +34,7 @@ executing==1.2.0
     #   stack-data
 factory-boy==3.3.0
     # via -r requirements-dev.in
-faker==19.3.1
+faker==19.4.0
     # via
     #   -r requirements-dev.in
     #   factory-boy
@@ -84,7 +84,7 @@ pygments==2.16.1
     # via
     #   devtools
     #   ipython
-pytest==7.4.1
+pytest==7.4.2
     # via -r requirements-dev.in
 python-dateutil==2.8.2
     # via faker
diff --git a/src/dispatch/database/revisions/tenant/versions/2023-09-05_1dd78f49e303.py b/src/dispatch/database/revisions/tenant/versions/2023-09-05_1dd78f49e303.py
deleted file mode 100644
index f9563d43f66a..000000000000
--- a/src/dispatch/database/revisions/tenant/versions/2023-09-05_1dd78f49e303.py
+++ /dev/null
@@ -1,30 +0,0 @@
-"""Adds an environment variable for spliting up test and prod signals.
-
-Revision ID: 1dd78f49e303
-Revises: 4e57f5b1f3f3
-Create Date: 2023-09-05 09:57:18.160124
-
-"""
-from alembic import op
-import sqlalchemy as sa
-
-# revision identifiers, used by Alembic.
-revision = "1dd78f49e303"
-down_revision = "4e57f5b1f3f3"
-branch_labels = None
-depends_on = None
-
-
-def upgrade():
-    # ### commands auto generated by Alembic - please adjust! ###
-    op.add_column("signal", sa.Column("environment", sa.String(), nullable=True, default="prod"))
-    op.execute("UPDATE signal SET environment = 'prod'")
-    op.alter_column("signal", "environment", nullable=False)
-
-    # ### end Alembic commands ###
-
-
-def downgrade():
-    # ### commands auto generated by Alembic - please adjust! ###
-    op.drop_column("signal", "environment")
-    # ### end Alembic commands ###
diff --git a/src/dispatch/signal/flows.py b/src/dispatch/signal/flows.py
index 7f61241a99a0..373ec4efa85f 100644
--- a/src/dispatch/signal/flows.py
+++ b/src/dispatch/signal/flows.py
@@ -19,12 +19,7 @@
 from dispatch.signal import flows as signal_flows
 from dispatch.signal import service as signal_service
 from dispatch.signal.enums import SignalEngagementStatus
-from dispatch.signal.models import (
-    SignalFilterAction,
-    SignalInstance,
-    SignalInstanceCreate,
-    SignalEnvironment,
-)
+from dispatch.signal.models import SignalFilterAction, SignalInstance, SignalInstanceCreate
 from dispatch.workflow import flows as workflow_flows
 from dispatch.entity_type.models import EntityScopeEnum
 
@@ -98,17 +93,29 @@ def signal_instance_create_flow(
     if not signal_instance.signal.create_case:
         return signal_instance
 
-    # process signal <-> case overrides
+    # processes overrides for case creation
+    # we want the following order of precedence:
+    # 1. signal instance overrides
+    # 2. signal definition overrides
+    # 3. case type defaults
+
     if signal_instance.case_priority:
         case_priority = signal_instance.case_priority
     else:
         case_priority = signal_instance.signal.case_priority
 
+    # if the signal has provided a case type use it's values instead of the definitions
+    conversation_target = None
     if signal_instance.case_type:
         case_type = signal_instance.case_type
+        if signal_instance.signal.conversation_target:
+            conversation_target = signal_instance.case_type.conversation_target
     else:
         case_type = signal_instance.signal.case_type
 
+        if signal_instance.signal.conversation_target:
+            conversation_target = signal_instance.signal.conversation_target
+
     assignee = None
     if signal_instance.signal.oncall_service:
         email = service_flows.resolve_oncall(
@@ -116,10 +123,6 @@ def signal_instance_create_flow(
         )
         assignee = {"individual": {"email": email}}
 
-    conversation_target = None
-    if signal_instance.signal.conversation_target:
-        conversation_target = signal_instance.signal.conversation_target
-
     # create a case if not duplicate or snoozed and case creation is enabled
     case_in = CaseCreate(
         title=signal_instance.signal.name,
@@ -172,7 +175,6 @@ def create_signal_instance(
     signal = signal_service.get_by_variant_or_external_id(
         db_session=db_session,
         project_id=project.id,
-        environment=signal_instance_data.get("environment", SignalEnvironment.PROD),
         external_id=signal_instance_data.get("id"),
         variant=signal_instance_data["variant"],
     )
diff --git a/src/dispatch/signal/models.py b/src/dispatch/signal/models.py
index e7d37e5496e4..23dfd127e490 100644
--- a/src/dispatch/signal/models.py
+++ b/src/dispatch/signal/models.py
@@ -129,11 +129,6 @@ class SignalFilterAction(DispatchEnum):
     none = "none"
 
 
-class SignalEnvironment(DispatchEnum):
-    PROD = "prod"
-    TEST = "test"
-
-
 class Signal(Base, TimeStampMixin, ProjectMixin):
     id = Column(Integer, primary_key=True)
     name = Column(String)
@@ -146,7 +141,6 @@ class Signal(Base, TimeStampMixin, ProjectMixin):
     variant = Column(String)
     loopin_signal_identity = Column(Boolean, default=False)
     enabled = Column(Boolean, default=False)
-    environment = Column(String, default=SignalEnvironment.PROD)
     case_type_id = Column(Integer, ForeignKey(CaseType.id))
     case_type = relationship("CaseType", backref="signals")
     case_priority_id = Column(Integer, ForeignKey(CasePriority.id))
@@ -310,7 +304,6 @@ class SignalBase(DispatchBase):
     enabled: Optional[bool] = False
     external_url: Optional[str]
     create_case: Optional[bool] = True
-    environment: Optional[SignalEnvironment] = SignalEnvironment.PROD
     oncall_service: Optional[Service]
     source: Optional[SourceBase]
     created_at: Optional[datetime] = None
@@ -337,7 +330,6 @@ class SignalUpdate(SignalBase):
 class SignalRead(SignalBase):
     id: PrimaryKey
     engagements: Optional[List[SignalEngagementRead]] = []
-    environment: Optional[SignalEnvironment] = SignalEnvironment.PROD
     entity_types: Optional[List[EntityTypeRead]] = []
     filters: Optional[List[SignalFilterRead]] = []
     workflows: Optional[List[WorkflowRead]] = []
@@ -352,7 +344,6 @@ class SignalReadMinimal(DispatchBase):
     description: Optional[str]
     variant: Optional[str]
     external_id: str
-    environment: Optional[SignalEnvironment] = SignalEnvironment.PROD
     enabled: Optional[bool] = False
     external_url: Optional[str]
     create_case: Optional[bool] = True
diff --git a/src/dispatch/signal/service.py b/src/dispatch/signal/service.py
index f207ecc0b4d8..f445763af842 100644
--- a/src/dispatch/signal/service.py
+++ b/src/dispatch/signal/service.py
@@ -225,31 +225,18 @@ def get_by_primary_or_external_id(
 
 
 def get_by_variant_or_external_id(
-    *,
-    db_session: Session,
-    project_id: int,
-    environment: str,
-    external_id: str = None,
-    variant: str = None,
+    *, db_session: Session, project_id: int, external_id: str = None, variant: str = None
 ) -> Optional[Signal]:
     """Gets a signal it's external id (and variant if supplied)."""
     if variant:
         return (
             db_session.query(Signal)
-            .filter(
-                Signal.project_id == project_id,
-                Signal.environment == environment,
-                Signal.variant == variant,
-            )
+            .filter(Signal.project_id == project_id, Signal.variant == variant)
             .one_or_none()
         )
     return (
         db_session.query(Signal)
-        .filter(
-            Signal.project_id == project_id,
-            Signal.environment == environment,
-            Signal.external_id == external_id,
-        )
+        .filter(Signal.project_id == project_id, Signal.external_id == external_id)
         .one_or_none()
     )
 
diff --git a/src/dispatch/signal/views.py b/src/dispatch/signal/views.py
index 6234ec65f849..b83aee39ab25 100644
--- a/src/dispatch/signal/views.py
+++ b/src/dispatch/signal/views.py
@@ -1,11 +1,11 @@
 import logging
 from typing import Union
 
-from fastapi import APIRouter, BackgroundTasks, Depends, HTTPException, Request, Response, status
+from fastapi import APIRouter, BackgroundTasks, HTTPException, Request, Response, status, Depends
 from pydantic.error_wrappers import ErrorWrapper, ValidationError
 from sqlalchemy.exc import IntegrityError
 
-from dispatch.auth.permissions import PermissionsDependency, SensitiveProjectActionPermission
+from dispatch.auth.permissions import SensitiveProjectActionPermission, PermissionsDependency
 from dispatch.auth.service import CurrentUser
 from dispatch.database.core import DbSession
 from dispatch.database.service import CommonParameters, search_filter_sort_paginate
@@ -15,13 +15,11 @@
 from dispatch.rate_limiter import limiter
 from dispatch.signal import service as signal_service
 
-from .flows import signal_instance_update_flow
 from .models import (
     SignalCreate,
     SignalEngagementCreate,
     SignalEngagementPagination,
     SignalEngagementRead,
-    SignalEnvironment,
     SignalFilterCreate,
     SignalFilterPagination,
     SignalFilterRead,
@@ -46,6 +44,8 @@
     update_signal_filter,
 )
 
+from .flows import signal_instance_update_flow
+
 router = APIRouter()
 
 log = logging.getLogger(__name__)
@@ -75,14 +75,12 @@ def create_signal_instance(
     if not signal_instance_in.signal:
         external_id = signal_instance_in.raw.get("externalId")
         variant = signal_instance_in.raw.get("variant")
-        environment = signal_instance_in.raw.get("environment", SignalEnvironment.PROD)
 
         if external_id or variant:
             signal = signal_service.get_by_variant_or_external_id(
                 db_session=db_session,
                 project_id=project.id,
                 external_id=external_id,
-                environment=environment,
                 variant=variant,
             )
 
diff --git a/tests/factories.py b/tests/factories.py
index 2db070a9bd54..bb39718abbc6 100644
--- a/tests/factories.py
+++ b/tests/factories.py
@@ -817,7 +817,6 @@ class SignalFactory(BaseFactory):
     description = "Test Description"
     external_url = "https://test.com"
     external_id = "1234"
-    environment = "test"
     variant = "Test Variant"
     enabled = True
     loopin_signal_identity = False
diff --git a/tests/signal/test_signal_flow.py b/tests/signal/test_signal_flow.py
index 40642f89b765..f4612bbde555 100644
--- a/tests/signal/test_signal_flow.py
+++ b/tests/signal/test_signal_flow.py
@@ -12,7 +12,7 @@ def test_create_signal_instance(session, signal, case_severity, case_priority, u
     case_severity.default = True
     case_severity.project_id = signal.project_id
 
-    instance_data = {"variant": signal.variant, "environment": "test"}
+    instance_data = {"variant": signal.variant}
 
     assert create_signal_instance(
         db_session=session,
@@ -31,25 +31,6 @@ def test_create_signal_instance_no_variant(session, signal, case_severity, case_
     case_severity.default = True
     case_severity.project_id = signal.project_id
 
-    instance_data = {"variant": "unknown", "environment": "test"}
-    with pytest.raises(DispatchException):
-        create_signal_instance(
-            db_session=session,
-            project=signal.project,
-            signal_instance_data=instance_data,
-            current_user=user,
-        )
-
-
-def test_create_signal_instance_no_environment(session, signal, case_severity, case_priority, user):
-    from dispatch.signal.flows import create_signal_instance
-
-    case_priority.default = True
-    case_priority.project_id = signal.project_id
-
-    case_severity.default = True
-    case_severity.project_id = signal.project_id
-
     instance_data = {"variant": "unknown"}
     with pytest.raises(DispatchException):
         create_signal_instance(
@@ -70,7 +51,7 @@ def test_create_signal_instance_not_enabled(session, signal, case_severity, case
     case_severity.project_id = signal.project_id
 
     signal.enabled = False
-    instance_data = {"variant": signal.variant, "environment": "test"}
+    instance_data = {"variant": signal.variant}
     with pytest.raises(DispatchException):
         create_signal_instance(
             db_session=session,