The GM&G finally entered bankruptcy in 1895 and was sold to the Georgia Midland Railway which was founded in 1896 to take over the failed Georgia Midland and Gulf Railroad, the Georgia Midland Railway operated about 100 miles of rail from McDonough, GA to Columbus, GA.
The railroad didn't even last a full year when it was leased to the Southern Railway, but it remained a subsidiary until it was merged into the Norfolk Southern Railway in 1996.
The Norfolk Southern Training Center is located on this line between McDonough and Greenwood.
It then continued south toward and through Warm Springs, GA and then further south into Columbus, GA. Portions of this line still exist, mostly from McDonough to Greenwood (Liberty), and from the northern Spalding County line near the old Towaliga Station toward Experiment.
The "M" line is the route that Franklin D. Roosevelt took on his trips through Georgia on his trips to Warm Springs, GA when it was under control of the Southern Railway.