### we'll create first backend file:
# mkfile 20g /share/c0d0s0.file

### then we'll create zfs filesystem in there altroot= alias -R $new_root is *neccessary if
### we plan to put there anothere rpool in living BE where will conflict mountpoints
# zpool create -f -R /backup foo /share/c0d0s0.file

### then we'll create recursive snapshot for future `zfs send`
# zfs snapshot -r rpool@main_backup0

### destroying of any subvolume's snap will exclude that volume from `zfs send`
# zfs destroy rpool/ROOT/share@main_backup0

### here we send content of rpool@main_backup0 to our new zpool foo
### see that warning about missing rpool/ROOT/share@main_backup0
# zfs send -vR rpool@main_backup0 | zfs receive -Fd foo
sending from @ to rpool@main_backup0
sending from @ to rpool/dump@main_backup0
sending from @ to rpool/ztemplate@snap1
sending from @snap1 to rpool/ztemplate@SUNWzone1
sending from @SUNWzone1 to rpool/ztemplate@SUNWzone2
sending from @SUNWzone2 to rpool/ztemplate@SUNWzone3
sending from @SUNWzone3 to rpool/ztemplate@SUNWzone4
sending from @SUNWzone4 to rpool/ztemplate@SUNWzone5
sending from @SUNWzone5 to rpool/ztemplate@SUNWzone6
sending from @SUNWzone6 to rpool/ztemplate@SUNWzone7
sending from @SUNWzone7 to rpool/ztemplate@SUNWzone8
sending from @SUNWzone8 to rpool/ztemplate@SUNWzone9
sending from @SUNWzone9 to rpool/ztemplate@main_backup0
sending from @ to rpool/ROOT@main_backup0
sending from @ to rpool/ROOT/ROOT@snap0
sending from @snap0 to rpool/ROOT/ROOT@main_backup0
WARNING: could not send rpool/ROOT/share@main_backup0: does not exist
sending from @ to rpool/export@main_backup0
sending from @ to rpool/export/home@main_backup0
sending from @ to rpool/zones@main_backup0
sending from @ to rpool/zones/ossoF@snap0
sending from @snap0 to rpool/zones/ossoF@main_backup0
sending from @ to rpool/zones/simple-legacy@snap0
sending from @snap0 to rpool/zones/simple-legacy@ready
sending from @ready to rpool/zones/simple-legacy@main_backup0
sending from @ to rpool/zones/am1@snap0
sending from @snap0 to rpool/zones/am1@snap1
sending from @snap1 to rpool/zones/am1@main_backup0
sending from @ to rpool/zones/commsF@snap0
sending from @snap0 to rpool/zones/commsF@main_backup0
sending from @ to rpool/zones/dsee1@main_backup0
sending from @ to rpool/zones/am71@snap0
sending from @snap0 to rpool/zones/am71@main_backup0
sending from @ to rpool/swap@main_backup0
sending from @ to rpool/instances@repl0
sending from @repl0 to rpool/instances@repl1
sending from @repl1 to rpool/instances@repl2
sending from @repl2 to rpool/instances@main_backup0

### then we safely export whole volume because due to the buggy behaviour there couldn't be
### some volumes mounted properly because of mounting order:
zpool export foo

### then we'll re-import it back again
zpool import -R /backup -d /share foo

### optionally we can check with zfs mount if it's all okay .. in my case will be never mounted foo/ROOT/ROOT
### so just changing default mountpoint is necessary, please note that due to active altroot= we have to put
### there relative path because of absolut will be $altroot/$mountpoint
zfs set mountpoint=/root foo/ROOT/ROOT
zfs mount foo/ROOT/ROOT


###### now how it works:
# zpool import -R /backup -d /share/ foo

# zfs mount
rpool/ROOT/ROOT                 /
rpool/export                    /export
rpool/export/home               /export/home
rpool/zones                     /export/home/zones
rpool/zones/am1                 /export/home/zones/am1
rpool/zones/commsF              /export/home/zones/commsF
rpool/zones/dsee1               /export/home/zones/dsee1
rpool/zones/ossoF               /export/home/zones/ossoF
rpool/zones/simple-legacy       /export/home/zones/simple-legacy
rpool/instances                 /instances
rpool                           /rpool
rpool/ROOT/share                /share
rpool/ztemplate                 /zones/ztemplate
rpool/zones/am71                /export/home/zones/am71
foo/export                      /backup/export
foo/export/home                 /backup/export/home
foo/zones                       /backup/export/home/zones
foo/zones/am1                   /backup/export/home/zones/am1
foo/zones/am71                  /backup/export/home/zones/am71
foo/zones/commsF                /backup/export/home/zones/commsF
foo/zones/dsee1                 /backup/export/home/zones/dsee1
foo/zones/ossoF                 /backup/export/home/zones/ossoF
foo/zones/simple-legacy         /backup/export/home/zones/simple-legacy
foo/instances                   /backup/instances
foo                             /backup/rpool
foo/ztemplate                   /backup/zones/ztemplate

# zfs get mountpoint foo/ROOT/ROOT
NAME           PROPERTY    VALUE         SOURCE
foo/ROOT/ROOT  mountpoint  /backup/root  local

# zfs mount foo/ROOT/ROOT

# zfs mount | grep foo/ROOT/ROOT
foo/ROOT/ROOT

# zpool export foo