[Dovecot] removal of all keyword.

Hi,

how can I remove all keywords from an existing Maildir/?

After reading the docs I assume this might work:

1. Stopping dovecot
2. Removing all lowercase [a-z] from the filename flags
3. Removing the dovecot-keywords file
4. Removing the dovecot.index / dovecot.index.* files

Is that correct?

matthias