Can't restore VM: gpt signature detected

[VTOLfreak]

Target storage is LVM over iSCSI. (From a TrueNAS machine)
Backup source is PBS.
vm-101-disk-1 is the EFI boot disk of the VM.

This is on a Proxmox 7.0-4 BETA server:

• Overwriting existing VM fails with error: gpt signature detected.
• Removed VM, made sure all VM disks are gone in the storage view.
• Restore VM again, same error.

root@proxmox01:~# qmrestore pbs-store1:backup/vm/101/2021-06-24T19:57:29Z 101 --force
  Rounding up size to full physical extent 4.00 MiB
  Logical volume "vm-101-disk-0" created.
new volume ID is 'truenas-lvm:vm-101-disk-0'
WARNING: gpt signature detected on /dev/proxmoxlvm/vm-101-disk-1 at offset 512. Wipe it? [y/n]: [n]
  Aborted wiping of gpt.
  1 existing signature left on the device.
  Failed to wipe signatures on logical volume proxmoxlvm/vm-101-disk-1.
  Logical volume "vm-101-disk-0" successfully removed
temporary volume 'truenas-lvm:vm-101-disk-0' sucessfuly removed
error before or during data restore, some or all disks were not completely restored. VM 101 state is NOT cleaned up.
lvcreate 'proxmoxlvm/vm-101-disk-1' error:   Aborting. Failed to wipe start of new LV.
root@proxmox01:~#

After removing the VM, disk vm-101-disk-1 should not exist at all, how is it still giving the same error?
Any ideas what is causing this?
Any way I can tell qmrestore to wipe the GPT signature?

[UPDATE] I created a new iSCSI target and a new LVM storage with the saferemove option in storage.cfg. This should prevent the problem from returning, now I just have to move my VM disks over and throw the old storage away.
I still don't know how to force qmrestore to overwrite gpt signatures. Is there a commandline switch for this?