LVS netlist browser remove dummy layer

[MJLIZ]

Dear all,
When I use LVS to check netlist connection, the dummy layer always appear in netlist browser.
Is it possible to remove dummy layer?
I want to only display the real connection and I try to use "blank_circuit", "purge_nets" but it doesn't seems to help.
Example layout and lvs code please see as below. Thanks!!

LVS codoe:
metal1 = input(1,0)
via1 = input(2,0)
metal2 = input(3,0)

active_m1 = metal1.interacting(via1)
active_m2 = metal2.interacting(via1)

active = active_m1 + active_m2
non_active = (((metal1 + metal2) + via1) - active)

connect(metal1,via1)
connect(via1,metal2)

report_netlist

netlist.blank_circuit("non active")

[klayoutmatthias]

Could you be a bit more specific?

What is a "dummy layer"?

Your connectivity contains two metals and a via. All of that is listed in the netlist browser, because these three layers are part of the nets. The two computed layers do not appear in the connectivity, so they are not considered.

The code looks like a bad suggestion invented by ChatGPT.

Matthias