diff --git a/litellm/router.py b/litellm/router.py
index 653cb009797..6debe14ab27 100644
--- a/litellm/router.py
+++ b/litellm/router.py
@@ -10028,39 +10028,7 @@ class Router:
                     model_info=_model_info,
                 )
             )
-            for field in CustomPricingLiteLLMParams.model_fields:
-                if deployment.litellm_params.get(field) is not None:
-                    _model_info[field] = deployment.litellm_params[field]
-
-            Router._inherit_builtin_base_rates_for_off_peak(
-                model_info=_model_info,
-                backend_model=deployment.litellm_params.model,
-                custom_llm_provider=deployment.litellm_params.custom_llm_provider,
-            )
-            if _model_info.get("input_cost_per_token") is not None:
-                Router._inherit_builtin_cache_pricing(
-                    model_info=_model_info,
-                    backend_model=deployment.litellm_params.model,
-                    custom_llm_provider=deployment.litellm_params.custom_llm_provider,
-                )
-            Router._inherit_builtin_service_tier_pricing(
-                model_info=_model_info,
-                backend_model=Router._cost_map_backend_model(deployment),
-                custom_llm_provider=deployment.litellm_params.custom_llm_provider,
-            )
-            Router._inherit_builtin_tiered_output_rate(
-                model_info=_model_info,
-                backend_model=deployment.litellm_params.model,
-                custom_llm_provider=deployment.litellm_params.custom_llm_provider,
-            )
-
-            ## REGISTER MODEL INFO IN LITELLM MODEL COST MAP
-            Router._register_deployment_in_model_cost(
-                model_id=deployment.model_info.id,
-                model_info=_model_info,
-                model=deployment.litellm_params.model,
-                custom_llm_provider=deployment.litellm_params.custom_llm_provider,
-            )
+            Router._register_deployment_pricing(deployment)
 
             ## Check if LLM Deployment is allowed for this deployment
             if self.deployment_is_active_for_environment(deployment=deployment) is not True:
diff --git a/tests/unit/test_router_model_cost_isolation.py b/tests/unit/test_router_model_cost_isolation.py
index b18d9a3a15a..210b7b329fe 100644
--- a/tests/unit/test_router_model_cost_isolation.py
+++ b/tests/unit/test_router_model_cost_isolation.py
@@ -836,12 +836,14 @@ def test_should_not_downgrade_chatgpt_shared_key_mode_with_alias_override():
 @pytest.mark.parametrize("rate", (0.0, 0.004))
 @pytest.mark.parametrize("explicit_base", (False, True))
 @pytest.mark.parametrize("provider", (None, "bedrock"))
+@pytest.mark.parametrize("registration_path", ("direct", "startup", "reload"))
 def test_bedrock_deployment_inherits_invoked_profile_around_custom_prices(
     monkeypatch: pytest.MonkeyPatch,
     field: str,
     rate: float,
     explicit_base: bool,
     provider: str | None,
+    registration_path: str,
 ) -> None:
     from litellm.cost_calculator import completion_cost
     from litellm.types.utils import ModelResponse, Usage, PromptTokensDetailsWrapper
@@ -875,7 +877,12 @@ def test_bedrock_deployment_inherits_invoked_profile_around_custom_prices(
             }
         ),
     )
-    Router._register_deployment_pricing(deployment)
+    if registration_path == "direct":
+        Router._register_deployment_pricing(deployment)
+    else:
+        router: Final = Router(model_list=[deployment.to_json(exclude_none=True)])
+        if registration_path == "reload":
+            router.replay_model_cost_registrations()
     response: Final = ModelResponse(
         model=model,
         usage=Usage(
@@ -2740,14 +2747,7 @@ def test_a_reload_rebuilds_exactly_what_a_fresh_boot_registered() -> None:
         )
 
         rebuilt = litellm.model_cost["priced-id"]
-        assert at_boot.items() <= rebuilt.items(), (
-            f"the rebuild changed or dropped a field the boot registration wrote: "
-            f"{ {k: (v, rebuilt.get(k)) for k, v in at_boot.items() if rebuilt.get(k) != v} }"
-        )
-        assert {field: rebuilt[field] for field in set(rebuilt) - set(at_boot)} == {
-            "db_model": False,
-            "member_auto_router": False,
-        }
+        assert at_boot == rebuilt
         assert "member_auto_router" not in litellm.model_cost["gpt-4o"]
         assert router.model_list
     finally: