Hi Sunny2k,
Welcome to our forum.
When we add new trunks/SBC into topology, we should publish topology again, and you need not run this command on each Front end server.
For issue2, we need not export the configuration, and it will be replicated from CMS to Edge automatically.
If there are any questions or issues, please be free to let me know.
Best Regards,
Jim Xu
TechNet Community Support
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