Postfix module not seeing recipient BCC mapping

In Postfix main.cf I have defined:

sender_bcc_maps = hash:/etc/postfix/sender_bcc
recipient_bcc_maps = hash:/etc/postfix/recipient_bcc

The Webmin Postfix module's new BCC mapping function picks up the sender_bcc lookup table and presents it for editing, but it does not see recipient_bcc.

Status: 
Closed (fixed)