BUG report: dbox movealt doesn't move reverse (to default location)

[Vitalii]

On Thu, 9 Jul 2020 13:12:46 +0100
Vitalii <vnagara at yandex.com> wrote:

> Hi,
> 
> Here is the problem that occured: 
> #sudo doveadm -D altmove -u vv at vito.pp.ua all 
> works properly and moves all storage to alt dir.
> However, to move it back to default storage I add '-r' by manual:
> #sudo doveadm -D altmove -u vv at vito.pp.ua -r all
> That seems behave like the original command ignoring '-r'.
> 
> P.S. I have not found much information about dbox attachments
> commands. Seems none needs them.

As per https://wiki2.dovecot.org/Tools/Doveadm/Altmove 
Options:
 -r
    When the -r option is given this command works the other way round.
Mails will be moved from the alternative storage back to the default
mail location.

Still doesn't work in version 2.3.10.1

Can some one else check it please? Does anyone use this advanced format?