Family Tree Maker for Windows files (*.ftw, *.fbk)
Files
created by Family Tree Maker for Windows (FTW) versions 1 through 16 can be
directly
imported into My Family Tree.
Importing from Family Tree Maker for Windows 1-16
Family Tree Maker for Windows versions 1 to 16 store data in an Object Linking and Embedding (OLE) file which is a single file with a *.ftw or *.fbk file extension.
Fig 1. Family Tree Maker for Windows 4.