About the effect General text class parameters

[ehud.behar at protonmail.com]

I just selected for my document the IEEE Transactions layout (IEEEtran.layout).
In this file one can find the following content:

Sides		1

SecNumDepth	3

TocDepth	3

I expected to see a change for the corresponding parameters in the Document Settings dialog, but nothing changes:

The table of contents depth and section depth keeps to be just the same as used by my settings for Document Defaults (chapters and onward is not included).
I also don't see the removal of "twoside" option for the document class: It keeps to be
\documentclass[twoside]{article}

Should the statements of this kind (Sides, SecNumDepth, TocDepth) lock the corresponding buttons and menus in the document settings?
If nothing changes or activates when I declare those styles, then what is the point of them? Or perhaps I am missing anything here?
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