Hi guys,
I found that after fixing the issue with this ticket (No2) ticket NO.4 with the multicast issue was resolved automatically.
As after changing the network between SW1 and SW2 to area 1 and building the virtual-link between then across area 1
the inter-area summary from SW1 does no longer propagte to R1. instead R1 now has the exact match for the RP (SW4) loopback 10.x.10.10/32 via SW1.
So ticket 4 solution can be scipped. Unless you reverse the order and go for Ticket 4 first.
Has anyone encountered this.
Regards