MathMagic does not support automatic numbering of inserted equations in MS Word. But you may put numbers manually by using the “Insert -> Caption…” menu of MS Word.
MathMagic Mac version does work with MS Word’s Drag&Drop or Copy&Paste features when you want to insert equations made with MathMagic, but the auto-baseline feature is not working with MS Word on Mac yet.
MathMagic Windows version can work with MS Word by using OLE instead of Drag&Drop or Copy&Paste. When inserted via OLE, the auto-baseline on Windows is supported.