It's Burning as .img and not .mov

I have shared and burned a project before in final cut. I want to burn an additional dvd of the project. I select share, (select the dvd destination that I used in the past). It then prepares to share it and save it as an .img instead of the .mov (I think that what the extension it burned in the past. When you inserted the dvd it went straight to the play movie). I have checked the settings and info pop up that appears after you select share and it states when disc loads: And show menu is showing. The layers is automatic. It worked last time I burned it as it should. Any idea what happened and what can I do to return this project to a new dvd? Thanks.