Help me understand skipCustomListeners & skipIoMappings

Hey Community!
Can you help me understand how to use this configuration below when migrating instances? What would be a good test case that will let me see the skip / no-skip effect?

skipCustomListeners: A boolean value to control whether execution listeners should be invoked during migration
skipIoMappings: A boolean value to control whether input/output mappings should be executed during migration.

I tried to create some BPMN examples to understand how this flag works in real-time but there is really no difference in behavior. Irrespective of the flag, it always executes the listeners.

When we say “true”, will it skip the execution listeners of current activity, or all the activities in the current instance?