My first test is to upload both a native FTM 16 file (if possible) and a GEDCOM file to Legacy Family Tree. I am using the same FTM 16 database, and a GEDCOM file created from it, to perform these tests.
Legacy Family Tree 7 permits uploads from Personal Ancestral File Versions 2 through 5, Ancestral Quest Versions 2 and 3.x, and from a GEDCOM file. It cannot upload from a Family Tree Maker file.
I uploaded the GEDCOM, and the screen below summarizes the data file characteristics:
* 38,420 individuals
The GEDCOM file took about 10 minutes to upload.
The Legacy Family Tree file is 76.964 mb in size in my computer file folders.
The number of families (15,129), and number of sources (298), in the Legacy Family Tree 7 file are different from the numbers found in the Family Tree Maker 2009 (15,121 and 1,466) file uploaded via GEDCOM. The number of Individuals is the same. Also, FTM 2009 indicated 1,466 sources, not 298. Hmmm, I wonder why the difference? I think that I have many more source citations than 1,466, but don't think that I have that many master sources. Obviously, FTM 16, FTM 2009 and Legacy Family Tree 7 are counting source things differently!
Because this was a GEDCOM file upload, any images that I had in my FTM 16 database did not import into the program.
Finally, the file size of the Legacy Family Tree 7 file (76.964 mb) is somewhat smaller than the Family Tree Maker 2009 file size (82.468 mb).