You can process existing pre-notifications via ‘Legacy Road’.
It may be the case that you are still using the old HCN Road for your pre-notifications at the time of introduction of the new version. You can complete these as follows. Go to the renewed HCN Road. Click on the ‘Legacy Road’ tab. Here, you will still find the pre-notifications that you were working on and you can complete them. You submit new pre-notifications in the new version of HCN Road.