Step 1:

configuration:

353454534534 evpl Point To Point 910924812984783242
Device UNI VLANs (click to edit)
CE 2 ens5 200
ens6 210
CE 1 ens5 100

Run traffic from c2u1 VLAN 200 to c2u2 - should be broadcast - PASS
Run traffic from c1u1 VLAN 100 to c2u1 VLAN 200 (CPEs leaned the mac from previous) - C2u1 VLAN 200 should get the packets - PASS

Step 2:
add new vlan to the ports and vlan on new port

Configuration:
353454534534 evpl Point To Point 910924812984783242
Device UNI VLANs (click to edit)
CE 2 ens5 200, 220
ens6 210, 230
CE 1 ens5 100
ens6 300

Run traffic from c2u1 VLAN 200 to c2u2 - should be broadcast - PASS
Run traffic from c1u1 VLAN 100 to c2u1 VLAN 200 (CPEs leaned the mac from previous) - C2u1 VLAN 200 should get the packets - Failed - Missing group in 220.

Logs with flows CPEs attached for step 1 & step 2.