Ghost VM

Hi All

I had an installation with 3 X VM's 100, 101 and 102 I did a really stupid thing and pulled the plug while it was taking snapshots. When I switched on it appeared that the three VM's had disapeared, I restored them from backup but had to name them different so used 500, 501 and 502

Proxmox let me delete 100 and 101 but refuses to delete 102 of course every time a snap shot is taken I get;

102
VM 102
FAILED
00:00:03
command 'qm set 102 --lock backup' failed with exit code 255

Any idea what file I need to edit or how I remove this ghost entry?

Thanks