Loss of duration when changing timer start events in event sub process

[sombrek]

Describe the Bug

The duration of a timer start event within an event subprocess is lost, when the event is changed from non-interrupting to interrupting (or vice versa).

Steps to Reproduce

1. Create an event sub process
2. Make the start event a timer start event (non-interrupting or interrupting)
3. Set the duration of the timer
4. Use Change element on the start event and select interrupting or non-interrupting timer start event.

Sample model: timer-duration.bpmn.txt

Expected Behavior

The duration should be kept (it does work for dates and when using the toggle button).

Environment

• Library version: 18.6.1
• Found in Camunda Modeler 5.35.0

[barmac]

Thanks for reporting. I can reproduce it via replace menu, but not when changing type via toggle.

Screen.Recording.2025-05-12.at.09.11.43.mov

I will copy the contents of the issue to camunda/camunda-modeler repo as I cannot transfer it across organizations.

[barmac]

Camunda Modeler issue: camunda/camunda-modeler#5029

[jarekdanielak]

@barmac notice how on your recording, after the Duration is gone, the event type doesn't change.

[barmac]

@barmac notice how on your recording, after the Duration is gone, the event type doesn't change.

I haven't even noticed, good catch.

[barmac]

In the Desktop Modeler (today's nightly), the duration is not lost but also the event type doesn't change.