After updating an old article, what revenue context do you save?

A creator monetization question about recording update date, changed sections, traffic mix, ad coverage, and affiliate clicks before reading RPM.

After updating an old article, I try to save the update date, changed sections, title change, traffic source mix, country/device split, ad coverage, and affiliate click movement before judging RPM. Otherwise the update, audience shift, and layout change all blur together. What do you record after a refresh?