How to tell ExtJS Grid that edited data already synced?

I have few grids on a page. After I edit data in them I press Save button, collect all changes and build Ajax request with changes to server. All works fine, except one thing. After data successfully updated I need to tell grid to redraw and refresh it store, means remove updated / created records from store ( changes displayed as red rectangles in top left corner ).

If I try to remove all records and fill them again I get some ExtJS error: Uncaught TypeError: Cannot read property 'internalId' of undefined callstack:

• Ext.define.updateIndexes ext-all-debug.js:58747
• Ext.define.onAdd ext-all-debug.js:58701
• Base.callParent ext-all-debug.js:2833
• Ext.define.onAdd ext-all-debug.js:76400
• fire ext-all-debug.js:10259
• Ext.define.fireEvent ext-all-debug.js:13385
• Ext.define.insert ext-all-debug.js:44663
• Ext.define.add ext-all-debug.js:44688
• Ext.define.listeners.write OrderEdit.js:560
• fire ext-all-debug.js:10259
• Ext.define.fireEvent ext-all-debug.js:13385
• Ext.define.onProxyWrite ext-all-debug.js:43978
• Ext.define.onBatchOperationComplete ext-all-debug.js:44005
• fire ext-all-debug.js:10259
• Ext.define.fireEvent ext开发者_如何学Go-all-debug.js:13385
• onProxyReturn ext-all-debug.js:51056
• Ext.define.processResponse ext-all-debug.js:26205
• (anonymous function) ext-all-debug.js:26397
• Ext.apply.callback ext-all-debug.js:5022
• Ext.define.onComplete ext-all-debug.js:21028
• Ext.define.onStateChange ext-all-debug.js:20979
• (anonymous function) ext-all-debug.js:1503

Is there any other way to do it correctly ?

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to simply redraw the grid and get rid of those red rectangles ... just use commit() function for the records that have been updated or created. This normally should work.