Yes, this change was documented at the time in the NWI-5 impact analysis: https://www.ripe.net/manage-ips-and-asns/db/impact-analysis-for-nwi-5-implementation

"One of the consequences of dropping the ASN authentication requirement is that the ASNholder might not be aware of the creation of a ROUTE(6) object that shows them to be the originator. This consequence will be mitigated by sending a notification email to the notify email address of the ASN. The "notify" attribute is optional. If the ASN does not have a "notify" attribute set, we will not send a notification email."

I will update the database documentation to include this.

Regards

Ed Shryane

RIPE NCC