There are two reasons as to why I am going to keep the old one:
1.) By the time this sword came up, there were already over 1,000 downloads, which means I take it off, people get confused as to why their favorite sword is no longer there.

2.) Both swords may be the Chaos Eater, however they are different in size, and are very different in how specular is handled. People have their preferences and it's not hurting anyone having them both up there.

You might want to delete the old version, so the workshop doesn't get filled with multiples of the same swords.