Hey Anna,

'When the new courses are added, all currently complete users are then set to incomplete until they finished these new courses'.

This doesn't happen!

See here: https://help.totaralearning.com/display/TL12/Certifications

Changing or removing courses in an active certification

If the initial certification path is changed for an active certification, this will not remove the certification completions for users who have already completed it.

Once a user is marked as certified any changes you make to the path will not affect their certification and it will remain as complete. Once the user reaches the re-certification window open point, the completion will be archived and the user will need to complete the re-certification path.

Only newly assigned users or users with a status of in progress will be affected by these changes and these users will need to complete the certification based on the changes to the content.

The reasoning here is the Learners are given a clear understanding of what is required of them when they are initially assigned to the cert.

Changes can be made to the recert path, but any changes only take effect after certification.

Let us know if you have any further queries or are unclear about anything.

cheers,

George