I am trying to group a number of AlarmSummary shapes representing different alarm severities either for the service to which the Visio is linked to, either for an element of this service.

Without the grouping the AlarmSummaries show the expected result (i.e. the count of each of the alarm severities within their respective context (service or service-element).

But when I group these shapes this no longer works. I tried to explictily add an Element Shape Data using [this service], but without any effect. Also when hardcoding the FilterContext argument (instead of using placeholders like [this service] or [property:...]) I cannot get this to work.