doveadm -D and -v options

According to doveadm-dsync man page the above two options are valid, but they are rejected when used:

tornado # doveadm backup -v -u testuser remote:pi.me.name:4814 backup: invalid option -- 'v' doveadm backup [-u <user>|-A] [-S ] [-fPRU] [-l <secs>] [-r <rawlog path>] [-m <mailbox>] [-g ] [-n <namespace> | -N] [-x <exclude>] [-s <state>] -d|<dest> tornado # tornado # doveadm backup -D -u testuser remote:pi.me.name:4814 backup: invalid option -- 'D' doveadm backup [-u <user>|-A] [-S ] [-fPRU] [-l <secs>] [-r <rawlog path>] [-m <mailbox>] [-g ] [-n <namespace> | -N] [-x <exclude>] [-s <state>] -d|<dest> tornado #

This is with 2.2.16 (latest -hg). Looks to me like either a bug, or the documentation (man doveadm-sync) is incorrect...?

Reuben