I'm ashamed to say I'd not noticed that.There is also a "undo" and "redo" button in winbox.
What problems were you having before?My RB1200 normal again with ROS 5.22,thanks
Use packet-sniffer then open the dump in wireshark and filter as appropriate?It would be nice to be able to export a torch.
Maybe it was just a neutrino passing through your 751's CPU