Forgive me, but I don't believe the dates you have given could be correct.
They are 23 years apart.
More likely, it seems to me, is that you have been given the record pertaining to someone else with the same, or similar, name. This is probably an error at the records centre when they searched for the name. Did you question it at the time with the records centre ?
If the registration was confirmed as occurring in 1949, how could it also be done in 1972 ? it does not make sense to me at all.