I have provided plenty of reference materials yet you have provided none. All writings in Chamar section have comes from sources that are verifiable. Yet you have provided none. You are the one with the ECCENTRIC IDIOLOGY. 
You still have not provided ANY VERIFIABLE sources to show that RAMDASIA and CHAMAR are different.
Chamars that took up weaving are known as RAMDASIA's.
A simple google search on "RAMDASIA CHAMAR" will provide you with countless links.   bal537