send segments when saving a culture

src/Umbraco.Web.UI.Client/src/packages/core/content/manager/content-data-manager.ts

@@ -152,4 +152,18 @@ export class UmbContentWorkspaceDataManager<
 				.map((x) => new UmbVariantId(x.culture, x.segment)) ?? []
 		);
 	}
+
+	override async constructData(selectedVariantIds: Array<UmbVariantId>) {
+		let selection = selectedVariantIds;
+
+		// If we vary by segment we need to save all segments for a selected culture.
+		if (this._variesBySegment === true) {
+			const dataVariants = this.getCurrent()?.variants ?? [];
+			const selectedCultures = selectedVariantIds.map((x) => x.culture);
+			const selectedCulturesIncludingSegments = dataVariants.filter((x) => selectedCultures.includes(x.culture));
+			selection = selectedCulturesIncludingSegments.map((x) => UmbVariantId.Create(x));
+		}
+
+		return super.constructData(selection);
+	}
 }