diff --git a/src/i18n/org/opencastproject/adminui/languages/lang-en_US.json b/src/i18n/org/opencastproject/adminui/languages/lang-en_US.json
index 488dcdb2ec..9fb5f4470d 100644
--- a/src/i18n/org/opencastproject/adminui/languages/lang-en_US.json
+++ b/src/i18n/org/opencastproject/adminui/languages/lang-en_US.json
@@ -171,6 +171,7 @@
 		"EVENTS_CREATED": "The event has been created",
 		"EVENTS_UPLOAD_STARTED": "The event is being uploaded… {{ progress }}%",
 		"EVENTS_NOT_CREATED": "The event could not be created",
+		"EVENTS_UPDATED": "The event has been successfully updated",
 		"EVENTS_UPDATED_ALL": "All events have been successfully updated",
 		"EVENTS_NOT_UPDATED": "The event could not be saved",
 		"EVENTS_NOT_UPDATED_ID": "The event {{ id }} could not be saved",
diff --git a/src/slices/eventDetailsSlice.ts b/src/slices/eventDetailsSlice.ts
index bdde6074a4..e4f323b338 100644
--- a/src/slices/eventDetailsSlice.ts
+++ b/src/slices/eventDetailsSlice.ts
@@ -1564,24 +1564,47 @@ export const updateAssets = createAsyncThunk('eventDetails/updateAssets', async
 	let formData = new FormData();
 
 	let assets: {
-		workflow: string | undefined,
 		options: UploadAssetOption[],
 	} = {
-		workflow: uploadAssetWorkflow,
 		options: [],
 	};
 
+	let assetFlavors = "";
+
 	uploadAssetOptions.forEach((option) => {
 		if (!!values[option.id]) {
 			formData.append(option.id + ".0", values[option.id]);
 			assets.options = assets.options.concat(option);
+			const uploadAssetFlavor = [option.flavorType, option.flavorSubType].join("/");
+			if (assetFlavors.length > 0) {
+				assetFlavors = [assetFlavors, uploadAssetFlavor].join(",");
+			} else {
+				assetFlavors = uploadAssetFlavor;
+			}
 		}
 	});
 
+	const uploadAssetWorkflowConfiguration: {
+		"downloadSourceflavorsExist": string,
+		"download-source-flavors": string,
+	} = {
+		"downloadSourceflavorsExist": String(assetFlavors.length > 0),
+		"download-source-flavors": assetFlavors,
+	};
+
+	const processing: {
+		workflow: string | undefined,
+		configuration: typeof uploadAssetWorkflowConfiguration,
+	} = {
+		workflow: uploadAssetWorkflow,
+		configuration: uploadAssetWorkflowConfiguration,
+	};
+
 	formData.append(
 		"metadata",
 		JSON.stringify({
 			assets: assets,
+			processing: processing,
 		})
 	);
 
diff --git a/src/slices/eventSlice.ts b/src/slices/eventSlice.ts
index 75785a0a72..9408a454d8 100644
--- a/src/slices/eventSlice.ts
+++ b/src/slices/eventSlice.ts
@@ -582,7 +582,7 @@ export const postNewEvent = createAsyncThunk('events/postNewEvent', async (param
 			) {
 				formData.append(
 					uploadAssetOptions[i].id + ".0",
-					String(values[uploadAssetOptions[i].id])
+					values[uploadAssetOptions[i].id] as File
 				);
 				assets.options = assets.options.concat(uploadAssetOptions[i]);
 			}