After adding or modifying a set of security questions, you need to import the new security questions file. Importing a security questions file overwrites the existing file with the new file. All of the existing questions are replaced with the questions in the new file.
Note: When you import a new security questions file, the system deletes all answers to the set of security questions that you modified. This affects users who have already enrolled and entered answers to their security questions.
You can run a report that identifies which users need to answer the updated security questions. Run a report using the All Users template, and set the Security Questions Language parameter to include the language that you are modifying. You can also include attributes, such as Email, that allow you to contact those users.
In the Security Console, click Setup > System Settings.
Click Security Questions Management.
Click Import Security Questions.
Click Browse, and attach the security questions file.
Select Yes, import security questions file, and click Import.