Can't use z-index or negative padding/margin

Hello.

Is there a way to stop Position > ignore auto-layout from removing the frame/object from the flow of the document/parent? All I want to do is z-position a frame -20px above the object above it.

Easy to do in HTML and CSS. Absolute pain in the dick in Figma.

What do people do to maintain a proper auto-layout?

Thanks,
Will