Which version are you using ? I'm at 12.1.1 204 I think
The other day I was setting up federation with IBM verse and I did find F5 imported incorrectly certs from metadata, maybe is a bug we can report. IBM has two, one for signing, one for encryption. Common names were like IBM_VERSE_S and IBM_VERSE_E. But when I came to the gui, to my surprise both were as IBM_VERSE_E
What I did was, edit metadata with notepad, copy text for both certs between < and > and paste with notepad in a .txt and rename to .cer
Then I imported back to gui and reassigned them to SP-connector
Then certs show correct name and everything begin to work