Where has "Keychain First Aid" gone?
Starting in OSX 10.11, you will need to open the Keychain Access app and go to Preferences &gt; Reset My Default Keychain.  "Reset" is a bit of misnomer; actually, it will move your old keychain to a separate database file, and create a new, clean keychain.

Next, if you do File &gt; Add Keychain, you can re-add your old keychain (for example, login_renamed_1) to the viewer.  You can then manually copy over your keys from the old keychain to the new keychain.  

You will have to re-enter your root password for each key that you copy, and it will throw errors at you, but in the end they will get copied over.