doveadm backup into IMAP folder

Hi all, I am migrating a number of account from an old domain to a new one. I would like to store all imported email from the old domain under a specific IMAP folder. For example, if having test@domain.old, I would like to import all old email to test@domain.new/fromold.

While I succeeded using doveadm backup / dsync to successfully replicate the old mailbox to the new one, I am unable to store all imported mail under a specific folder. So, I have some questions:

• can the above be done?
• if yes, can you confirm that email outside the specific destination folder will not be touched/deleted/whatever by doveadm backup?
• does a "dry-run" option exists for doveadm backup / dsync?

Thank you all.

-- Danti Gionatan Supporto Tecnico Assyoma S.r.l. - www.assyoma.it [1] email: g.danti@assyoma.it - info@assyoma.it GPG public key ID: FF5F32A8