diff --git a/src/ChartInternal/interactions/subchart.ts b/src/ChartInternal/interactions/subchart.ts
index d9f1ff5cb..08fc9d6a0 100644
--- a/src/ChartInternal/interactions/subchart.ts
+++ b/src/ChartInternal/interactions/subchart.ts
@@ -195,21 +195,18 @@ export default {
 					} else {
 						const shapeUpdate = shapeChart
 							.selectAll(`.${CLASS[`chart${name}`]}`)
-							.data(targets.filter($$[`is${name}Type`].bind($$)))
-							.attr("class", chartClass);
-
-						shapeUpdate.exit().remove();
+							.attr("class", chartClass)
+							.data(targets.filter($$[`is${name}Type`].bind($$)));
 
 						const shapeEnter = shapeUpdate.enter()
 							.append("g")
 							.style("opacity", "0")
 							.attr("class", chartClass)
-							.merge(shapeUpdate);
-
-						// Bars for each data
-						shapeEnter.append("g")
+							.append("g")
 							.attr("class", shapeClass);
 
+						shapeUpdate.exit().remove();
+
 						// Area
 						v === "line" && $$.hasTypeOf("Area") &&
 							shapeEnter.append("g").attr("class", $$.getClass("areas", true));
diff --git a/test/interactions/subchart-spec.ts b/test/interactions/subchart-spec.ts
index af89b9b26..a7a9af30b 100644
--- a/test/interactions/subchart-spec.ts
+++ b/test/interactions/subchart-spec.ts
@@ -272,21 +272,21 @@ describe("SUBCHART", () => {
 		});
 
 		const checkPath = (selector, expected) => {
-			chart.$.svg.select(`.${CLASS.subchart}`)
+			chart.internal.$el.subchart.main
 				.selectAll(selector).each(function(d, i) {
 					expect(this.getAttribute("d")).to.be.equal(expected[i]);
 				});
 		};
 
 		it("check for area-spline", () => {
-			checkPath(`.${CLASS.lines} path`, [
+			checkPath(`.${CLASS.line} path`, [
 				'M6,56.448321599836746C6,56.448321599836746,201.16666666666669,55.645682413359175,299,55.244362820120394C396.8333333333333,54.84304322688161,593,54.04040404040404,593,54.04040404040404',
 				'M6,52.896643199673505C6,52.896643199673505,201.16666666666669,51.291364826718365,299,50.488725640240794C396.8333333333333,49.686086453763224,593,48.08080808080808,593,48.08080808080808',
 				'M6,42.241607999183756C6,42.241607999183756,201.16666666666669,38.2284120667959,299,36.221814100601975C396.8333333333333,34.21521613440805,593,30.202020202020208,593,30.202020202020208',
 				'M6,28.03489439853076C6,28.03489439853076,201.16666666666669,20.81114172023262,299,17.199265381083556C396.8333333333333,13.587389041934493,593,6.363636363636374,593,6.363636363636374'
 			]);
 
-			checkPath(`.${CLASS.areas} path`, [
+			checkPath(`.${CLASS.area} path`, [
 				'M6,56.448321599836746C6,56.448321599836746,201.16666666666669,55.645682413359175,299,55.244362820120394C396.8333333333333,54.84304322688161,593,54.04040404040404,593,54.04040404040404L593,60C593,60,396.8333333333333,60,299,60C201.16666666666669,60,6,60,6,60Z',
 				'M6,52.896643199673505C6,52.896643199673505,201.16666666666669,51.291364826718365,299,50.488725640240794C396.8333333333333,49.686086453763224,593,48.08080808080808,593,48.08080808080808L593,60C593,60,396.8333333333333,60,299,60C201.16666666666669,60,6,60,6,60Z',
 				'M6,42.241607999183756C6,42.241607999183756,201.16666666666669,38.2284120667959,299,36.221814100601975C396.8333333333333,34.21521613440805,593,30.202020202020208,593,30.202020202020208L593,48.08080808080808C593,48.08080808080808,396.8333333333333,49.686086453763224,299,50.488725640240794C201.16666666666669,51.291364826718365,6,52.896643199673505,6,52.896643199673505Z',
@@ -299,14 +299,14 @@ describe("SUBCHART", () => {
 		});
 
 		it("check for area-step type", () => {
-			checkPath(`.${CLASS.lines} path`, [
+			checkPath(`.${CLASS.line} path`, [
 				'M6,56.448321599836746L152.5,56.448321599836746L152.5,55.244362820120394L446,55.244362820120394L446,54.04040404040404L593,54.04040404040404',
 				'M6,52.896643199673505L152.5,52.896643199673505L152.5,50.488725640240794L446,50.488725640240794L446,48.08080808080808L593,48.08080808080808',
 				'M6,42.241607999183756L152.5,42.241607999183756L152.5,36.221814100601975L446,36.221814100601975L446,30.202020202020208L593,30.202020202020208',
 				'M6,28.03489439853076L152.5,28.03489439853076L152.5,17.199265381083556L446,17.199265381083556L446,6.363636363636374L593,6.363636363636374'
 			]);
 
-			checkPath(`.${CLASS.areas} path`, [
+			checkPath(`.${CLASS.area} path`, [
 				'M6,56.448321599836746L152.5,56.448321599836746L152.5,55.244362820120394L446,55.244362820120394L446,54.04040404040404L593,54.04040404040404L593,60L446,60L446,60L152.5,60L152.5,60L6,60Z',
 				'M6,52.896643199673505L152.5,52.896643199673505L152.5,50.488725640240794L446,50.488725640240794L446,48.08080808080808L593,48.08080808080808L593,60L446,60L446,60L152.5,60L152.5,60L6,60Z',
 				'M6,42.241607999183756L152.5,42.241607999183756L152.5,36.221814100601975L446,36.221814100601975L446,30.202020202020208L593,30.202020202020208L593,48.08080808080808L446,48.08080808080808L446,50.488725640240794L152.5,50.488725640240794L152.5,52.896643199673505L6,52.896643199673505Z',
@@ -319,7 +319,7 @@ describe("SUBCHART", () => {
 		});
 
 		it("check for bar type", () => {
-			checkPath(`.${CLASS.bars} path`, [
+			checkPath(`.${CLASS.bar} path`, [
 				"M39.96666666666666,60V56.448321599836746 H99.66666666666666 V60z",
 				"M239.3,60V55.244362820120394 H299 V60z",
 				"M438.6333333333334,60V54.04040404040404 H498.33333333333337 V60z",
@@ -341,7 +341,7 @@ describe("SUBCHART", () => {
 		});
 
 		it("check for non-grouped line type", () => {
-			checkPath(`.${CLASS.lines} path`, [
+			checkPath(`.${CLASS.line} path`, [
 				'M6,55.083333333333336L299,52.16543026706231L593,49.24752720079129',
 				'M6,46.47551928783382L299,40.63971315529179L593,34.80390702274976',
 				'M6,37.867705242334324L299,29.11399604352127L593,20.36028684470821',
@@ -384,12 +384,12 @@ describe("SUBCHART", () => {
 		});
 
 		it("check for area-line-range type", () => {
-			checkPath(`.${CLASS.lines} path`, [
+			checkPath(`.${CLASS.line} path`, [
 				'M6,44.981818181818184L124,46.054545454545455L241,45.518181818181816L358,47.12727272727273L475,43.909090909090914L593,42.836363636363636',
 				'M6,46.054545454545455L124,23.527272727272727L241,38.54545454545455L358,6.363636363636366L475,33.18181818181818L593,22.454545454545457'
 			]);
 
-			checkPath(`.${CLASS.areas} path`, [
+			checkPath(`.${CLASS.area} path`, [
 				'M6,48.2L124,47.663636363636364L241,47.12727272727273L358,48.2L475,46.054545454545455L593,46.590909090909086L593,38.65272727272727L475,40.690909090909095L358,45.518181818181816L241,42.836363636363636L124,43.372727272727275L6,43.909090909090914Z',
 				'M 6 256.81818181818187'
 			]);
@@ -476,4 +476,56 @@ describe("SUBCHART", () => {
 			});
 		})
 	});
+
+
+	describe("dynamic data load via .load() API", () => {
+		before(() => {
+			args = {
+				data: {
+					columns: [
+						["data1", 30, 200, 100, 400, 150, 250]
+					]
+				},
+				subchart: {
+					show: true
+				}
+			};
+		});
+
+		it("shouldn't generate duplicated nodes #1", done => {
+			// when
+			chart.load({
+				columns: [
+					["data1", 30, 20, 50, 40, 60, 50],
+					["data2", 130, 120, 150, 140, 160, 150],
+				],
+				done: function() {
+					expect(
+						this.internal.$el.subchart.main.selectAll(`.${CLASS.line}-data1`).size()
+					).to.be.equal(1);
+				}
+			});
+		});
+
+		it("shouldn't generate duplicated nodes #2", done => {
+			// when
+			chart.load({
+				columns: [
+					["data2", 130, 120, 150, 140, 160, 150],
+				],
+				unload: ["data1"],
+				done: function() {
+					const {main} = this.internal.$el.subchart;
+
+					expect(
+						main.selectAll(`.${CLASS.line}-data1`).empty()
+					).to.be.true;
+
+					expect(
+						main.selectAll(`.${CLASS.line}-data2`).size()
+					).to.be.equal(1);
+				}
+			});
+		});
+	});
 });