How Difficult to Retrieve From Archive?

I recently took over as Scoutmaster and the database needs some cleaning up.  The old Scoutmaster was the only Scoutmaster (15 years) and he has tons of Eagle Scouts and Adults still in the database that we have not seen once in the past 5-10 years.

I wanted to clean up the database and archive some of those people.  How difficult would it be to retrieve them with all the info, and pics intact if i had to.

YIS
Bryan