Opening an older score with new version

Dear MuseScore,

I've just downloaded version 2.0.1. However, I have a score created ;by an old version (evidently 0.95 or lower--Think it was created several years back) and would like to work with it some more and maybe share it. However, it doesn't open properly because I don't think the .mcsz extension is supported and I would like to save my work to use it. Is there any way to convert this file so it properly opens. It says to use version 1x and convert and of course, I would like to use this version. I hope I am explaining this correctly.