Click Utilities > RebuildData Files. This screen that displays conveys the message: These routines export all data from the files DZZTV???. The files are then reset using the latest template and the data is imported.
To continue to rebuild the data files select Proceed.
When should you rebuild your Calculator ledger?
This option should only be used if your Tax Calculator is corrupt, or if you have received a new version of the Tax Calculator ledger.