[Mailman-Users] changing message number

Hello,

I will move a few lists to mailman, from ecartis. I want to retain message numbers, and continue current sequence. So I need to start message number from a non-zero number.

How can I do that ?

I am new to mailman. I can undump, config.pck, I can chnage post-id. I do not know, how to put that fiile in pck format.

Secondly, I manage to change post-id, will it break anything else ?

Regards Mustafa Akgul