okay, so i'm taking the klasse plunge too and had similar questions... here's what i found:
if you AIO and SG, yes a regular or even dawn wash wont strip it all the way down. you can apply AIO to remove SG or an alcohol (or alcohol/water) mix to strip. you can also use a paint cleanser (e.g. p21 paint cleanser) to strip. most people at autopia do a super prep job so once they klasse, they really dont strip and start over unless they have too.
here is the thread i asked on autopia about it
if you AIO and SG, yes a regular or even dawn wash wont strip it all the way down. you can apply AIO to remove SG or an alcohol (or alcohol/water) mix to strip. you can also use a paint cleanser (e.g. p21 paint cleanser) to strip. most people at autopia do a super prep job so once they klasse, they really dont strip and start over unless they have too.
here is the thread i asked on autopia about it