Dear Heiner,
Thank you for the issue report.
If the incoming and outgoing message flows are connected to Pool directly, then they are visible after suppressing Pool content:
suppressed.png
But if message flows are connected to inner pool elements, then unfortunately, it is not possible to display them if even at least one pool is suppressed.
Before pool is suppressed:
before.png
After pool is suppressed:
after.png
If you have any other questions or concerns, please feel free to contact us.
Kind regards,
No Magic Customer Support
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