Well, first off, take a look at the forum you're on.
What you do is rip the object, whether .obj or .dae, and then you reupload it yourself. When you do so, you add a small piece of whatever created by the original creator into that mesh object so it appears as though it was created by the same person. That small object has to be your anchor piece so it generates the 'creator' tag of the linked parts.
Nobody can pull apart your clothing and check for themselves, and the idea here is not to rip something that someone else made, then try and sell it on your own.
That way you now have full permission to change and modify it however you want. Therefore it is no longer no-modify.
What you do is rip the object, whether .obj or .dae, and then you reupload it yourself. When you do so, you add a small piece of whatever created by the original creator into that mesh object so it appears as though it was created by the same person. That small object has to be your anchor piece so it generates the 'creator' tag of the linked parts.
Nobody can pull apart your clothing and check for themselves, and the idea here is not to rip something that someone else made, then try and sell it on your own.
That way you now have full permission to change and modify it however you want. Therefore it is no longer no-modify.