Snapshots delete main qcow2 file of VM instead of snaphsot

Hi everyone

Facing issue that when creating a snapshot on OpenNebula interface, and then deleting it, it will remove the original qcow2 file of the vm and keeps the snapshot file.

This causes issues that when the vm is powered off and back on, the VM is unbootable as the original OS ect is gone.

What settings might be causing this behavior?