JMeter and Vaadin 7

I created JMeter performance tests for a vaadin 7 application and it worked very well. Now we migrated to vaadin 7 (and are very satisfied), and I need to reenable the JMeter performance tests.

in v6.x the ajax requests between vaadin client and vaadin server contained the debugIds for the changed elements
in v7.x some ajax requests do not contain these IDs, afaik, they contain just the connector id (see example at the end)

How stable are these IDs? Do they change for each user session? Do they change for each compilation of the widgetset?
If they change with every compilation of the widgetset, JMeter cannot be used for performance/load testing.
Do you have any recommendation?

Kind regards
Robert

[[“70”,“v”,“v”,[“positionx”,[“i”,“465”]
]],[“70”,“v”,“v”,[“positiony”,[“i”,“377”]
]],[“78”,“com.vaadin.shared.ui.button.ButtonServerRpc”,“click”,[{“altKey”:false, “type”:“1”, “button”:“LEFT”, “shiftKey”:false, “metaKey”:false, “clientY”:“504”, “clientX”:“798”, “ctrlKey”:false, “relativeY”:“8”, “relativeX”:“80”}]
]][font=Courier New]

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