Lost Feature: Lookup Multiple Rows in Same Clay Table

The ability to lookup within the same Clay table has been taken away. Earlier we were able to use the enrichment "Lookup Multiple Rows in Other Table" within the same table. This allowed a way to determine the lines which had values which were unique. For example - I could identify if the Company Domain contained one instance of the domain - "cgi.com" or multiple. Sometime ago, it seems like that feature was taken away.