Re: How to recreate groups for nnml mail directory?

[CHENG Gao]

Is the old "active" file there? If so, you can copy your old mail dirs
to ~/Mail (need check to avoid duplicate dir), and add content from old
active file into your new active file. You can put all old mail dirs to
a subdir (say oldback), and then you can edit old active file to add
"oldback." to each group name, and then paste the content into new
active file, and then you can browse these groups to move messages to
other group(s) (using 'B m').

HTH