Actually, I don't really get what you are trying to achieve. Most important is, that your MX-Ports in use are two LAN-Ports and not the WAN-Ports. For these two LAN-Ports, Access is perfectly fine. EDIT: You say "ABC can not see XYZ". Does this mean the other direction is working? Or in general: What is already working? ISP1 to ISP2, ISP2 to ISP1, any Branch to MX, any Branch to the other ISP? How do you test? Are your test-packets allowed on the target-devices?
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