Hi PhilthyCollins,
In the example you have provided, only "change A" would be reflected in the item once it has been relisted according to your auto relist profile. An automatic relist should only differ from the closed eBay listing it was relisted from if your Auto Relist profile is configured to change the price, duration or quantity during the relist process.
If you find that any of your automatic relists are not working in this manner, please contact our Customer Support team directly from under the "Help" tab on our site and we will look into things further.
-Mike