Custom tags will lose when change task type

Developers General
1

I have a problem when I try this example: https://github.com/bpmn-io/bpmn-js-examples/tree/master/custom-meta-model
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when I change the task type from bpmn2:task to bpmn2:userTask, the custom tag qa:analysisDetails will lose in userTask, I want to retain the qa:analysisDetails tag, what should I do?

2

Replacing an element through changing its type will always result in the extension elements being gone unless you add a module to bpmn-js that copies those on moddleCopy.canCopyProperty which is an advanced use case.