Virtualbox: How to merge current state (snapshot) with disk image

We have a virtual server named Jira running under VirtualBox 4.0 (host is Debian Squeeze). At some point in time a VM failed to boot, so we had to boot from GRML rescue iso. Before doing that we have created a snapshot of VM. After fixing boot problems VM continued to use that snapshot as it's current state. This is the output of VBoxManage showvminfo jira:

Name:            jira
Guest OS:        Other/Unknown
UUID:            ef5260be-46d3-45cb-8c9d-9f9e322f9110
Config file:     /home/vbox/.VirtualBox/Machines/jira/jira.xml
Snapshot folder: /home/vbox/.VirtualBox/Machines/jira/Snapshots
Log folder:      /home/vbox/.VirtualBox/Machines/jira/Logs
Hardware UUID:   ef5260be-46d3-45cb-8c9d-9f9e322f9110
Memory size:     2048MB
Page Fusion:     off
VRAM size:       8MB
HPET:            off
Chipset:         piix3
Firmware:        BIOS
Number of CPUs:  1
Synthetic Cpu:   off
CPUID overrides: None
Boot menu mode:  message and menu
Boot Device (1): Floppy
Boot Device (2): DVD
Boot Device (3): HardDisk
Boot Device (4): Not Assigned
ACPI:            on
IOAPIC:          on
PAE:             on
Time offset:     0 ms
RTC:             local time
Hardw. virt.ext: on
Hardw. virt.ext exclusive: on
Nested Paging:   on
Large Pages:     off
VT-x VPID:       on
State:           running (since 2012-05-24T12:23:48.127000000)
Monitor count:   1
3D Acceleration: off
2D Video Acceleration: off
Teleporter Enabled: off
Teleporter Port: 0
Teleporter Address: 
Teleporter Password: 
Storage Controller Name (0):            jira.sata
Storage Controller Type (0):            IntelAhci
Storage Controller Instance Number (0): 0
Storage Controller Max Port Count (0):  30
Storage Controller Port Count (0):      30
Storage Controller Bootable (0):        on
Storage Controller Name (1):            jira.ata
Storage Controller Type (1):            PIIX4
Storage Controller Instance Number (1): 0
Storage Controller Max Port Count (1):  2
Storage Controller Port Count (1):      2
Storage Controller Bootable (1):        on
jira.sata (0, 0): /home/vbox/.VirtualBox/Machines/jira/Snapshots/{e8bedcaa-278b-4b06-a825-1dddc9e4fdb3}.vdi (UUID: e8bedcaa-278b-4b06-a825-1dddc9e4fdb3)
NIC 1:           MAC: 080027ABB6DD, Attachment: Bridged Interface 'eth0.100', Cable connected: on, Trace: off (file: none), Type: Am79C973, Reported speed: 0 Mbps, Boot priority: 0
NIC 2:           disabled
NIC 3:           disabled
NIC 4:           disabled
NIC 5:           disabled
NIC 6:           disabled
NIC 7:           disabled
NIC 8:           disabled
Pointing Device: PS/2 Mouse
Keyboard Device: PS/2 Keyboard
UART 1:          disabled
UART 2:          disabled
Audio:           disabled
Clipboard Mode:  Bidirectional
Video mode:      720x400x0
VRDE:            enabled (Address 0.0.0.0, Ports 3389, MultiConn: off, ReuseSingleConn: off, Authentication type: null)
Video redirection: disabled
USB:             disabled

USB Device Filters:

<none>

Available remote USB devices:

<none>

Currently Attached USB Devices:

<none>

Shared folders:  <none>

VRDE Connection:    not active
Clients so far:     0

Guest:

OS type:                             Other
Additions run level:                 0
Configured memory balloon size:      0 MB

Snapshots:

   Name: beforeGRML (UUID: 70949bb5-985a-4ae6-ba28-3d0475434cf0) *

As you can see, snapshot is named beforeGRML. Actually I suspect that this snapshot is current state, and disk image is a state before we have recovered the machine with GRML iso.

My questions:

• is it correct that beforeGRML snapshot is actually a current state?
• whatever a 'current state' is, I want to merge it with VM disk and have no snapshots – how to do that?

Please note that VM is hosted at a remote Debian server and I use VBoxManage command line interface. (I've tried reading documentation but still can't figure out what all those 'snapshot delete' and 'snapshot restore' would do.)