[MM3-users] Advice on upgrading..

Mailman 3 people --

I am planning an upgrade for my Mailman 3 system, and I have a couple of questions.

I am currently running an old install of Mailman 3.3.5 on Debian Bullseye.

Rather than trying to upgrade this now ancient VM, my plan is to create a new VM and perform a fresh install of Mailman 3.3.10 on Debian Trixie.

I'd like advice on how to migrate mailing lists and archives from the old install to the new one. Is there a standard procedure?

My current implementation uses the Python venv installation method. I'd prefer a more container-focused installation, but since I don't believe Mailman 3 has official container images yet, I plan to continue with the venv approach. Please let me know your thoughts.

Thanks!

-- Stephen Daniel