Hi Dan,
If you are using SQLite, and you have old data from
C:\ProgramData\ArGoSoft\MailServer.Net
just stop the new installation of server, and overwrite everything with old data.
With SQL server it is more complicated. You can overwrite the data the same way, but you will have to properly attach the database and specify the correct connection string. Database, by default, is located in
C:\Program Files\ArGo Software Design\ArGoSoft Mail Server .NET\
Archie