Oh, great. So, you have just admitted that "update_add_htlc" (which can be bolt01 formatted) contains "onion_routing_packet", which includes routing instructions ("hop_data"). Now, read the "Forwarding HTLCs" section of bolt02 again and you will learn that you have to commit that HTLC (for your own security) before you forward it to the next hop. You also admitted that bolt04 describes the payload and not the actual messages that are sent to other nodes, so don't bother mentioning it in this case again.

I am not going to answer your bolt4/bolt7 ramble as it is clearly a trolling attempt, just like the HTLC signatures and payment secret case.

Good night, franky1. It was fun to argue with you again.