After you file

I purchased the Business Home disc version from the store. I completed one tax but had not transmitted it but I did save as to an external hard I then started my second tax and stopped before completing it but I saved it as well. When I went back to complete them about 30 minutes had passed and I went to open the second tax everything was fine but when I opened the first tax it had the tax information belonging   to the second tax.

How do I get the first tax backreturn.