In 1Password6, if the website match was not found, I recall being able to search and fill using a different entry.
This is useful if the website has changed its FQDN. With 1Password 7,
Why is search not a viable option?
1Password Version: 1Password 7 Version 7.3.2 (70302004)
Extension Version: 1.16.2
OS Version: OS X
Sync Type: 1password.com