Final Draft

Yes, Script Studio can import your script directly from Final Draft's xml file format (.fdx) by selecting this from the Import Options window.

You can also export to Final Draft via File > Export.

Movie Magic Screenwriter

Yes, but not directly unless you first export it to Final Draft xml format from one of their latest versions.

First you will need to export or save your script as a plain text file (.txt) without the layout formatting. Then select Import from the File Menu and your scripts can be imported into Script Studio either into one step or split up into separate steps.

Script Studio will automatically analyze the text and format it into screenplay layout but you may need to make a few manual adjustments since some paragraph elements may have been interpreted incorrectly.