Using FamilySearch Record Search - LDS

While searching for Jim's "PORTER" relatives on the FamilySearch Record Search "beta" website of the LDS Church, I found a Raymond Walter Porter who was living in Maryland (where Jim's Porter relatives were born and raised), but was born in Romeo, Michigan. Raymond Walter Porter is not a relative, but the record caught my eye because of his Michigan birthplace and Maryland residence.

Actually, as of this date (March 8, 2008) the U.S. WWII Draft Registration Cards - 1942, where the below record was found can be found by browsing through the records, not the easier to find "search."
Following up on the family of Raymond Walter Porter, he and his wife, Edith (and daughter Lois) were living in Genesee County, Flint Ward 5 (Rex? Street), in 1920, along with two boarders. In that census, his parents were listed as being born in England and New York. Neither he nor his parents were found in Macomb County, Michigan (location of his birthplace, Romeo, MI), so where were they? The FamilySearch Record Search has a searchable link to the 1900 census that revealed a Raymond Porter, born in 1893 (per WWII record above) living with William W. Porter, born in England, and Cornelia Porter, born in NY. In 1900 that family was living in Muskegon, Michigan (William, Cornelia, Raymond, and Charles). In 1910 the same four members of the William Porter family was living in Port Huron, Saint Clair Co. In 1920 William Cornelia, Charles Porter's widow, Gertrude, and baby Charles were still living in Port Huron, whereas Raymond and his family were in Flint.

In 1942, Raymond W. Porter is working for the U.S. Government at the Edgewood Arsenal and living in Baltimore, Maryland; his wife Edith was still living in Michigan at that time (Goodrich).