Switch between operating systems, VHD boot

I have 3 optional operating systems which can I select during boot.
Sometimes I need to restart the operating system which is running via VHD.
In this case I have automatically redirected to the native system of windows where I need to select what operating system to use.
Then the computer reboots again to finally boot into my pointed system.

That is one additional restart which is not needed at all.

I want to eliminate the unnecessary step.

Lets look at the boot loader situation now:

bcdedit /enum

This will report me:

Windows Boot Manager
--------------------
identifier              {bootmgr}
device                  partition=C:
description             Windows Boot Manager
locale                  en-US
inherit                 {globalsettings}
integrityservices       Enable
default                 {current}
resumeobject            {3d6e0d9d-94ef-11e6-b413-9a532a3b8c21}
displayorder            {current}
                        {3d6e0da1-94ef-11e6-b413-9a532a3b8c21}
                        {3d6e0da2-94ef-11e6-b413-9a532a3b8c21}
toolsdisplayorder       {memdiag}
timeout                 10

Windows Boot Loader
-------------------
identifier              {current}
device                  partition=C:
path                    \Windows\system32\winload.exe
description             Windows 8.1
locale                  en-US
inherit                 {bootloadersettings}
recoverysequence        {3d6e0d9f-94ef-11e6-b413-9a532a3b8c21}
integrityservices       Enable
recoveryenabled         Yes
allowedinmemorysettings 0x15000075
osdevice                partition=C:
systemroot              \Windows
resumeobject            {3d6e0d9d-94ef-11e6-b413-9a532a3b8c21}
nx                      OptIn
bootmenupolicy          Standard

Windows Boot Loader
-------------------
identifier              {3d6e0da1-94ef-11e6-b413-9a532a3b8c21}
device                  vhd=[locate]\win7x64ultimate.vhd
path                    \Windows\system32\winload.exe
description             Windows 7 Ultimate
locale                  en-US
inherit                 {bootloadersettings}
recoverysequence        {3d6e0d9f-94ef-11e6-b413-9a532a3b8c21}
integrityservices       Enable
recoveryenabled         Yes
allowedinmemorysettings 0x15000075
osdevice                vhd=[locate]\win7x64ultimate.vhd
systemroot              \Windows
resumeobject            {3d6e0d9d-94ef-11e6-b413-9a532a3b8c21}
nx                      OptIn
bootmenupolicy          Standard

Windows Boot Loader
-------------------
identifier              {3d6e0da2-94ef-11e6-b413-9a532a3b8c21}
device                  vhd=[locate]\win81x64.vhd
path                    \Windows\system32\winload.exe
description             Another 8.1
locale                  en-US
inherit                 {bootloadersettings}
recoverysequence        {3d6e0d9f-94ef-11e6-b413-9a532a3b8c21}
integrityservices       Enable
recoveryenabled         Yes
allowedinmemorysettings 0x15000075
osdevice                vhd=[locate]\win81x64.vhd
systemroot              \Windows
resumeobject            {3d6e0d9d-94ef-11e6-b413-9a532a3b8c21}
nx                      OptIn
bootmenupolicy          Standard

Basically all options are listed in first section.

Now on the native drive c:\ I places these files:
set-default-native.cmd:

bcdedit /default {3d6e0d9e-94ef-11e6-b413-9a532a3b8c21}
shutdown -r -t 0

set-default-7-vhd.cmd:

bcdedit /default {3d6e0da1-94ef-11e6-b413-9a532a3b8c21}
shutdown -r -t 0

set-default-81-vhd.cmd:

bcdedit /default {3d6e0da2-94ef-11e6-b413-9a532a3b8c21}
shutdown -r -t 0

Every time I decide to use one OS longer than one reboot I set it as default operating system :)