Hi @Tara
these groups have been created automatically by ServiceNow during an upgrade as a result of the changed approach regarding subscription management.
Basically you can ignore them as the customer (you or your system admin) is now responsible to assign the right user groups to the license management.
There is a good community article with lots of links to further resources and an embedded video which explains everything better: https://community.servicenow.com/community?id=community_event&sys_id=4d944ea21b6e7c90cd3b33bc1d4bcbc...
Kind regards
Maik
