dovecot - Apr 2020 - 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 at domain.old, I would 
like to import all old email to test at 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 at assyoma.it - info at assyoma.it
GPG public key ID: FF5F32A8

On 2020-04-08 23:36, Gionatan Danti wrote:
> 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 at domain.old, I would
> like to import all old email to test at domain.new/fromold.
i can follow that
> 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:
this have not being dokumented good for me to understand and i have to 
give up
> - can the above be done?
hopefully yes, but what doveconf -n is needed to make it work ?
> - 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?
i cant say anything other then users here still says use dovecot

all i know works is https://www.aid4mail.com/