diff --git a/packages/back-end/generated/spec.yaml b/packages/back-end/generated/spec.yaml
index 6879c0d47afe..99032f6f96dd 100644
--- a/packages/back-end/generated/spec.yaml
+++ b/packages/back-end/generated/spec.yaml
@@ -1204,6 +1204,21 @@ paths:
                   type: string
                 excludeFromPayload:
                   type: boolean
+                inProgressConversions:
+                  type: string
+                  enum:
+                    - loose
+                    - strict
+                attributionModel:
+                  type: string
+                  enum:
+                    - firstExposure
+                    - experimentDuration
+                statsEngine:
+                  type: string
+                  enum:
+                    - bayesian
+                    - frequentist
                 variations:
                   type: array
                   minItems: 2
diff --git a/packages/back-end/src/api/openapi/payload-schemas/UpdateExperimentPayload.yaml b/packages/back-end/src/api/openapi/payload-schemas/UpdateExperimentPayload.yaml
index f31825ba96e1..b8ff3de44822 100644
--- a/packages/back-end/src/api/openapi/payload-schemas/UpdateExperimentPayload.yaml
+++ b/packages/back-end/src/api/openapi/payload-schemas/UpdateExperimentPayload.yaml
@@ -58,6 +58,21 @@ properties:
     type: string
   excludeFromPayload:
     type: boolean
+  inProgressConversions:
+    type: string
+    enum:
+      - loose
+      - strict
+  attributionModel:
+    type: string
+    enum:
+      - firstExposure
+      - experimentDuration
+  statsEngine:
+    type: string
+    enum:
+      - bayesian
+      - frequentist
   variations:
     type: array
     minItems: 2
diff --git a/packages/back-end/src/services/experiments.ts b/packages/back-end/src/services/experiments.ts
index aab0ea0dd94e..a8d6eca40863 100644
--- a/packages/back-end/src/services/experiments.ts
+++ b/packages/back-end/src/services/experiments.ts
@@ -1853,6 +1853,9 @@ export function updateExperimentApiPayloadToInterface(
     variations,
     releasedVariationId,
     excludeFromPayload,
+    inProgressConversions,
+    attributionModel,
+    statsEngine,
   } = payload;
   return {
     ...(trackingKey ? { trackingKey } : {}),
@@ -1871,6 +1874,11 @@ export function updateExperimentApiPayloadToInterface(
     ...(status ? { status } : {}),
     ...(releasedVariationId !== undefined ? { releasedVariationId } : {}),
     ...(excludeFromPayload !== undefined ? { excludeFromPayload } : {}),
+    ...(inProgressConversions !== undefined
+      ? { skipPartialData: inProgressConversions === "strict" }
+      : {}),
+    ...(attributionModel !== undefined ? { attributionModel } : {}),
+    ...(statsEngine !== undefined ? { statsEngine } : {}),
     ...(variations
       ? {
           variations: variations?.map((v) => ({
diff --git a/packages/back-end/src/validators/openapi.ts b/packages/back-end/src/validators/openapi.ts
index 91b005c5d321..3b544485cb69 100644
--- a/packages/back-end/src/validators/openapi.ts
+++ b/packages/back-end/src/validators/openapi.ts
@@ -121,7 +121,7 @@ export const getExperimentValidator = {
 };
 
 export const updateExperimentValidator = {
-  bodySchema: z.object({"assignmentQueryId":z.string().optional(),"trackingKey":z.string().optional(),"name":z.string().describe("Name of the experiment").optional(),"project":z.string().describe("Project ID which the experiment belongs to").optional(),"hypothesis":z.string().describe("Hypothesis of the experiment").optional(),"description":z.string().describe("Description of the experiment").optional(),"tags":z.array(z.string()).optional(),"metrics":z.array(z.string()).optional(),"guardrailMetrics":z.array(z.string()).optional(),"owner":z.string().describe("Email of the person who owns this experiment").optional(),"archived":z.boolean().optional(),"status":z.enum(["draft","running","stopped"]).optional(),"autoRefresh":z.boolean().optional(),"hashAttribute":z.string().optional(),"fallbackAttribute":z.string().optional(),"hashVersion":z.union([z.literal(1),z.literal(2)]).optional(),"disableStickyBucketing":z.any().optional(),"bucketVersion":z.number().optional(),"minBucketVersion":z.number().optional(),"releasedVariationId":z.string().optional(),"excludeFromPayload":z.boolean().optional(),"variations":z.array(z.object({"id":z.string().optional(),"key":z.string(),"name":z.string(),"description":z.string().optional(),"screenshots":z.array(z.object({"path":z.string(),"width":z.number().optional(),"height":z.number().optional(),"description":z.string().optional()})).optional()})).min(2).optional(),"phases":z.array(z.object({"name":z.string(),"dateStarted":z.string(),"dateEnded":z.string().optional(),"reasonForStopping":z.string().optional(),"seed":z.string().optional(),"coverage":z.number().optional(),"trafficSplit":z.array(z.object({"variationId":z.string(),"weight":z.number()})).optional(),"namespace":z.object({"namespaceId":z.string(),"range":z.array(z.number()).min(2).max(2),"enabled":z.boolean().optional()}).optional(),"targetingCondition":z.string().optional(),"reason":z.string().optional(),"condition":z.string().optional(),"savedGroupTargeting":z.array(z.object({"matchType":z.enum(["all","any","none"]),"savedGroups":z.array(z.string())})).optional(),"variationWeights":z.array(z.number()).optional()})).optional()}).strict(),
+  bodySchema: z.object({"assignmentQueryId":z.string().optional(),"trackingKey":z.string().optional(),"name":z.string().describe("Name of the experiment").optional(),"project":z.string().describe("Project ID which the experiment belongs to").optional(),"hypothesis":z.string().describe("Hypothesis of the experiment").optional(),"description":z.string().describe("Description of the experiment").optional(),"tags":z.array(z.string()).optional(),"metrics":z.array(z.string()).optional(),"guardrailMetrics":z.array(z.string()).optional(),"owner":z.string().describe("Email of the person who owns this experiment").optional(),"archived":z.boolean().optional(),"status":z.enum(["draft","running","stopped"]).optional(),"autoRefresh":z.boolean().optional(),"hashAttribute":z.string().optional(),"fallbackAttribute":z.string().optional(),"hashVersion":z.union([z.literal(1),z.literal(2)]).optional(),"disableStickyBucketing":z.any().optional(),"bucketVersion":z.number().optional(),"minBucketVersion":z.number().optional(),"releasedVariationId":z.string().optional(),"excludeFromPayload":z.boolean().optional(),"inProgressConversions":z.enum(["loose","strict"]).optional(),"attributionModel":z.enum(["firstExposure","experimentDuration"]).optional(),"statsEngine":z.enum(["bayesian","frequentist"]).optional(),"variations":z.array(z.object({"id":z.string().optional(),"key":z.string(),"name":z.string(),"description":z.string().optional(),"screenshots":z.array(z.object({"path":z.string(),"width":z.number().optional(),"height":z.number().optional(),"description":z.string().optional()})).optional()})).min(2).optional(),"phases":z.array(z.object({"name":z.string(),"dateStarted":z.string(),"dateEnded":z.string().optional(),"reasonForStopping":z.string().optional(),"seed":z.string().optional(),"coverage":z.number().optional(),"trafficSplit":z.array(z.object({"variationId":z.string(),"weight":z.number()})).optional(),"namespace":z.object({"namespaceId":z.string(),"range":z.array(z.number()).min(2).max(2),"enabled":z.boolean().optional()}).optional(),"targetingCondition":z.string().optional(),"reason":z.string().optional(),"condition":z.string().optional(),"savedGroupTargeting":z.array(z.object({"matchType":z.enum(["all","any","none"]),"savedGroups":z.array(z.string())})).optional(),"variationWeights":z.array(z.number()).optional()})).optional()}).strict(),
   querySchema: z.never(),
   paramsSchema: z.object({"id":z.string()}).strict(),
 };
diff --git a/packages/back-end/types/openapi.d.ts b/packages/back-end/types/openapi.d.ts
index 77956e071a1d..cb694d593d9c 100644
--- a/packages/back-end/types/openapi.d.ts
+++ b/packages/back-end/types/openapi.d.ts
@@ -3472,6 +3472,12 @@ export interface operations {
           minBucketVersion?: number;
           releasedVariationId?: string;
           excludeFromPayload?: boolean;
+          /** @enum {string} */
+          inProgressConversions?: "loose" | "strict";
+          /** @enum {string} */
+          attributionModel?: "firstExposure" | "experimentDuration";
+          /** @enum {string} */
+          statsEngine?: "bayesian" | "frequentist";
           variations?: ({
               id?: string;
               key: string;