diff --git a/packages/devextreme/testing/tests/DevExpress.ui.widgets.pivotGrid/store.xmla.common.tests.js b/packages/devextreme/testing/tests/DevExpress.ui.widgets.pivotGrid/store.xmla.common.tests.js
index dc9a6dc81baf..e77825e8e530 100644
--- a/packages/devextreme/testing/tests/DevExpress.ui.widgets.pivotGrid/store.xmla.common.tests.js
+++ b/packages/devextreme/testing/tests/DevExpress.ui.widgets.pivotGrid/store.xmla.common.tests.js
@@ -321,7 +321,28 @@ QUnit.module('Misc', stubsEnvironment, () => {
         assert.deepEqual(filterExpr, ['(SELECT {[Product].[Category].[Product].[Category]&}on 0']);
     });
 
+    QUnit.test('T1236954. Build a correct filter query when a member has unknown member', function(assert) {
+        this.store.load({
+            values: [{
+                dataField: '[Measures].[Calculated Cost]',
+            }],
+            columns: [{
+                dataField: '[Activities - Activities].[Activities]',
+                filterValues: ['[Activities - Activities].[Activities].[All].UNKNOWNMEMBER',
+                    '[Activities - Activities].[Activities].&[24]',
+                    '[Activities - Activities].[Activities].&[21]'],
+            }],
+            rows: [{
+                dataField: '[Departments - Activities].[Departments]',
+            }],
+        });
 
+        const filterExpr = this.getQuery().match(/\(select(.+?)on 0/gi);
+
+        assert.deepEqual(filterExpr, [
+            '(SELECT {[Activities - Activities].[Activities].[All].UNKNOWNMEMBER,[Activities - Activities].[Activities].&[24],[Activities - Activities].[Activities].&[21]}on 0',
+        ]);
+    });
 });
 
 QUnit.module('getDrillDownItems', stubsEnvironment, () => {
@@ -391,6 +412,25 @@ QUnit.module('getDrillDownItems', stubsEnvironment, () => {
         assert.strictEqual(this.getQuery(2), 'drillthrough SELECT [Measures].[Customer Count] on 0 FROM [Adventure Works]  CELL PROPERTIES VALUE, FORMAT_STRING, LANGUAGE, BACK_COLOR, FORE_COLOR, FONT_FLAGS');
     });
 
+    QUnit.test('getDrillDownItems with several value fields', function(assert) {
+        const loadOptions = {
+            columns: [{ dataField: '[Product].[Category]', filterType: 'include' }],
+            rows: [{ dataField: '[Ship Date].[Calendar Year]', filterType: 'include' }],
+            values: [{
+                dataField: '[Measures].[Customer Count]',
+                caption: 'Count'
+            }, { dataField: '[Measures].[Internet Sales Order]', caption: 'Sales Order' }]
+        };
+
+        this.store.getDrillDownItems(loadOptions, { columnPath: [], rowPath: [], dataIndex: 0 });
+        this.store.getDrillDownItems(loadOptions, { columnPath: [], rowPath: [], dataIndex: 1 });
+        this.store.getDrillDownItems(loadOptions, { columnPath: [], rowPath: [], dataIndex: 2 });
+
+        assert.strictEqual(this.getQuery(0), 'drillthrough SELECT [Measures].[Customer Count] on 0 FROM [Adventure Works]  CELL PROPERTIES VALUE, FORMAT_STRING, LANGUAGE, BACK_COLOR, FORE_COLOR, FONT_FLAGS');
+        assert.strictEqual(this.getQuery(1), 'drillthrough SELECT [Measures].[Internet Sales Order] on 0 FROM [Adventure Works]  CELL PROPERTIES VALUE, FORMAT_STRING, LANGUAGE, BACK_COLOR, FORE_COLOR, FONT_FLAGS');
+        assert.strictEqual(this.getQuery(2), 'drillthrough SELECT [Measures].[Customer Count] on 0 FROM [Adventure Works]  CELL PROPERTIES VALUE, FORMAT_STRING, LANGUAGE, BACK_COLOR, FORE_COLOR, FONT_FLAGS');
+    });
+
     QUnit.test('getDrillDownItems with paths without rows', function(assert) {
         const loadOptions = {
             columns: [{ dataField: '[Product].[Category]', filterType: 'include' }],