SOLVED
in case if that help anyone somehow parent snap for snap 1 came snap 2 thats why snapshots dissapeared from web interface
my qm.conf was
cat 4676.conf
bootdisk: scsi0
cores: 4
memory: 8192
name: vmname
net0: virtio=3E:F5:AA:6E:75:C7,bridge=vmbr0
parent: snap3
scsi0: data-zfs:vm-4676-disk-0,size=500G
scsihw: virtio-scsi-pci
smbios1: uuid=3724015c-8515-484d-85b3-3b39c890f634
vmgenid: e375bf7c-9837-427a-92a4-27860f52a08a
[snap1]
#before upgrade
bootdisk: scsi0
cores: 4
memory: 8192
name: vmname
net0: virtio=3E:F5:AA:6E:75:C7,bridge=vmbr0
parent: snap2
scsi0: data-zfs:vm-4676-disk-0,size=500G
scsihw: virtio-scsi-pci
smbios1: uuid=3724015c-8515-484d-85b3-3b39c890f634
snaptime: 1652859859
vmgenid: e375bf7c-9837-427a-92a4-27860f52a08a
[snap2]
#before upgrade BI
bootdisk: scsi0
cores: 4
memory: 8192
name: vmname
net0: virtio=3E:F5:AA:6E:75:C7,bridge=vmbr0
parent: snap1
scsi0: data-zfs:vm-4676-disk-0,size=500G
scsihw: virtio-scsi-pci
smbios1: uuid=3724015c-8515-484d-85b3-3b39c890f634
snaptime: 1652865664
vmgenid: e375bf7c-9837-427a-92a4-27860f52a08a
[snap3]
#one more before upgrade
bootdisk: scsi0
cores: 4
memory: 8192
name: vmname
net0: virtio=3E:F5:AA:6E:75:C7,bridge=vmbr0
parent: snap2
runningmachine: pc-i440fx-4.1+pve1
scsi0: data-zfs:vm-4676-disk-0,size=500G
scsihw: virtio-scsi-pci
smbios1: uuid=3724015c-8515-484d-85b3-3b39c890f634
snaptime: 1652878333
vmgenid: e375bf7c-9837-427a-92a4-27860f52a08a
vmstate: data-zfs:vm-4676-state-snap3