diff --git a/internal/sub/controller.go b/internal/sub/controller.go
index 3bc5dff5d..b25725fa4 100644
--- a/internal/sub/controller.go
+++ b/internal/sub/controller.go
@@ -504,11 +504,15 @@ func (a *SUBController) subs(c *gin.Context) {
 		metadata := a.metadataForSubRequest(func() *SubService { return subReq }, subId, builtinProfileURL(c, scheme, hostWithPort))
 		a.ApplyCommonHeaders(c, header, a.updateInterval, metadata.Title, metadata.SupportURL, metadata.ProfileURL, metadata.Announce, a.subEnableRouting, a.subRoutingRules, a.subHideSettings)
 
-		if a.subIncyEnableRouting && a.subIncyRoutingRules != "" {
+		// Incy's profile rides the raw body; other clients must not see that line (#6062).
+		if IsIncyClient(userAgent) && a.subIncyEnableRouting && a.subIncyRoutingRules != "" {
 			incyRules, _, err := resolveIncyRoutingSource(a.subIncyRoutingRules)
 			if err == nil && strings.TrimSpace(incyRules) != "" {
 				result.WriteString(incyRules)
 				result.WriteString("\n")
+				// INCY ranks a Routing header above a body line, so the shared
+				// profile must not override INCY's own one here.
+				c.Writer.Header().Del("Routing")
 			}
 		}
 
@@ -957,6 +961,12 @@ func (a *SUBController) ApplyCommonHeaders(
 		c.Writer.Header().Set("Announce", "base64:"+base64.StdEncoding.EncodeToString([]byte(profileAnnounce)))
 	}
 
+	// The Happ tab is Happ-only, so INCY reads it as blank and gets the shared
+	// JSON profile instead; INCY takes a routing link of any scheme (#6062).
+	incyClient := c.Request != nil && IsIncyClient(c.GetHeader("User-Agent"))
+	if incyClient {
+		profileEnableRouting, profileRoutingRules = false, ""
+	}
 	rules, remote, routingErr := resolveRoutingSource(remoteRoutingHapp, profileRoutingRules)
 	if strings.TrimSpace(profileRoutingRules) == "" {
 		// Happ/INCY fetch the geo files the baked rules reference through this
@@ -981,5 +991,5 @@ func (a *SUBController) ApplyCommonHeaders(
 	}
 
 	ApplyHappHeaders(c, a.happConfig, happManaged)
-	ApplyIncyHeaders(c, a.incyConfig, a.incyConfig.AutoDetect && c.Request != nil && IsIncyClient(c.GetHeader("User-Agent")))
+	ApplyIncyHeaders(c, a.incyConfig, a.incyConfig.AutoDetect && incyClient)
 }
diff --git a/internal/sub/controller_test.go b/internal/sub/controller_test.go
index 7af2aa6ac..8d5735187 100644
--- a/internal/sub/controller_test.go
+++ b/internal/sub/controller_test.go
@@ -802,3 +802,58 @@ func TestLegacyClashEndpointNormalizesShadowsocksCipher(t *testing.T) {
 		})
 	}
 }
+
+func TestIncyRoutingIsolatedFromHappHeaders(t *testing.T) {
+	seedSubDB(t)
+	seedSubInbound(t, "s1", "vl", 4492, 1, `{"network":"tcp","security":"none"}`)
+	gin.SetMode(gin.TestMode)
+	const happRules = "happ://routing/onadd/existing-rules"
+	const incyRules = "incy://routing/onadd/AbC+/="
+	sharedRules := "incy://routing/onadd/" + base64.StdEncoding.EncodeToString([]byte(`{"Name":"shared","DirectSites":["geosite:category-ru"]}`))
+
+	cases := []struct {
+		name              string
+		path              string
+		userAgent         string
+		incyRouting       bool
+		wantRouting       string
+		wantRoutingEnable string
+		wantIncyLine      bool
+	}{
+		{name: "happ keeps its own tab and never sees the incy line", path: "/sub/s1", userAgent: "Happ/1.2.0", incyRouting: true, wantRouting: happRules, wantRoutingEnable: "true"},
+		{name: "incy without its own tab gets the shared json profile", path: "/sub/s1", userAgent: "INCY/1.0.0/ios", wantRouting: sharedRules},
+		{name: "incy body profile is not outranked by a routing header", path: "/sub/s1", userAgent: "INCY/1.0.0/ios", incyRouting: true, wantIncyLine: true},
+		{name: "incy json documents keep the shared profile header", path: "/json/s1", userAgent: "INCY/1.0.0/ios", incyRouting: true, wantRouting: sharedRules},
+	}
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			router := gin.New()
+			NewSUBController(router.Group("/"),
+				WithSUBEncryption(false),
+				WithSUBJsonEnabled(true),
+				WithSUBEnableRouting(true),
+				WithSUBRoutingRules(happRules),
+				WithSUBJsonRoutingRules(sharedRules),
+				WithSUBIncyEnableRouting(tc.incyRouting),
+				WithSUBIncyRoutingRules(incyRules),
+			)
+			req := httptest.NewRequest(http.MethodGet, "http://sub.example.com"+tc.path, nil)
+			req.Header.Set("User-Agent", tc.userAgent)
+			resp := httptest.NewRecorder()
+			router.ServeHTTP(resp, req)
+			body := resp.Body.String()
+			if resp.Code != http.StatusOK || !strings.Contains(body, "vless") {
+				t.Fatalf("status=%d, body=%s", resp.Code, body)
+			}
+			if got := resp.Header().Get("Routing"); got != tc.wantRouting {
+				t.Fatalf("Routing = %q, want %q", got, tc.wantRouting)
+			}
+			if got := resp.Header().Get("Routing-Enable"); got != tc.wantRoutingEnable {
+				t.Fatalf("Routing-Enable = %q, want %q", got, tc.wantRoutingEnable)
+			}
+			if got := strings.HasSuffix(body, incyRules+"\n"); got != tc.wantIncyLine || (!got && strings.Contains(body, incyRules)) {
+				t.Fatalf("incy line at body end = %v, want %v; body=%s", got, tc.wantIncyLine, body)
+			}
+		})
+	}
+}