theruecollective on "Domain Change"

Hi there, I've already asked a question along the same lines but I just want to make sure I understand.
I created a blog on wordpress and then attached a domain name I bought else where to the blog. I have now purchased a different domain name through word press. I need to remove the domain name I purchased elsewhere from my blog and not have it map to my new one. By doing this will I loose all the work on my blog that was done to it while it was under that domian?

Thanks