The TaxAct desktop software allows you to create a backup file of the current return you are working on. This file can then later be restored should you need to recover that specific version. This file will be designated with a new extension, .baX where X is related to the tax year in question. For example, a typical 2020 backup return would look like "2020 Individual Tax Return.ta0.ba0."
The correct procedure to back up your file is:
To restore your backup: