It's not an invisible change. It's an intentional load scale fix.
You never flashed the Stg1.Rich scale? Sigh.
You need to WAIT to see where AFR lands before nuking the timing.
Any timing correction you see is irrelevant without fuel being correct first.
Notice I said TIMING CORRECTION, not KNOCK. The ECU pulls timing before any knock that has potential to cause damage happens.
http://datazap.me/u/tor/tor-105-just...zoom=1311-1522
If you worry so much about timing then just run the regular 98 map until you have fuel sorted.
You will need to start from scratch when you blow away the cat and flash Stg2 anyway.