Destroy a deported disk group

Today I wanted to destroy a disk group that was deported. A import fails because there were missing disks (it was just a test environment so loss of data was wanted):

# vxdg import testdg
VxVM vxdg ERROR V-5-1-10978 Disk group testdg: import failed:
Disk for disk group not found

When I try to destroy the disk group I got the following error:

# vxdg destroy testdg
VxVM vxdg ERROR V-5-1-581 Disk group testdg: No such disk group is imported

The solution was to force import the disk group:

# vxdg -f import testdg
VxVM vxdg WARNING V-5-1-560 Disk c1t5d0: Not found, last known location: c1t5d0
VxVM vxdg WARNING V-5-1-560 Disk c1t6d0: Not found, last known location: c1t6d0

Listing the the disk group gave me the following:

# vxdg list
NAME         STATE           ID
testdg      enabled,cds          1376122179.20.localhost

And finally destroying the disk group worked too:

# vxdg destroy impaxdg