The record you linked is titled, "Register of Applications Made for Release of Prisoners Compiled by the Office of the Commissary General of Prisoners, February - June 1865." See page 47276. Columns are, Name of prisoner, Letter Mark, Applicant (sponsor), To Whom Sent, When. At some point they began leaving out the next to last column, and just gave date sent (When).

if this is your Lorenzo Taylor, (there were many men about his age living at the time), the date is three years after he left the 17th Mississippi. Ordinarily prisoners-of-war who were captured in 1862 were released on exchange after a few months. I've seen thousands of POW records and never seen any Confederate captured in 1862 who was held more than a year.

Cannot imagine why he would have been in prison at that time.