Thread:Crazy teitoku/@comment-7580628-20160603070120/@comment-26091666-20160603105038

There are two forms of exporting your KC3 data, if you exported your kc3 file as "Export Basic Profile (player info, fleets, ships, equipment, config)" then yes you will lose all those histories as they do not contain all the historical data.

On the other hand under "Data Backup" tab and specifically there is an option to export it, if you exported your data there it is in theory possible to re-import the old data back. However, do remember that the time you did a complete backup last using this option (as opposed to the former one) till when you want to revert to the old back - any data that were logged since would most likely be overwritten.