Pause Alarm Notifcation Pipeline while shelved

Ignition
1

I am attempting to “pause” an alarm notification pipeline while the alarm is shelved, then resume. This is what I tried:

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Once the alarm is shelved it seems to drop out of the pipeline. The only dropout condition is “Acknowledgement”. What should I try to achieve this?

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I needed to add a small (5 sec) delay to the expression block loop. The infinite loop was breaking things.