How to remove Cannot Import 63079..... No Such Pool

[AVB]

While working on my Reported Size Discrepancies question of yesterday I decided to go ahead and upgrade to 9.1. That didn't fix or answer the questions I had but I did notice that I get this error message twice - Cannot import '6307928287297081032' No such pool available.
How can I get rid of this?

 

[dlavigne]

Post the output of "zpool status"

 

[AVB]

NAME STATE READ WRITE CKS
UM
Media ONLINE 0 0 0
raidz1-0 ONLINE 0 0 0
gptid/b233bf98-f58c-11e2-9147-00252289e35b ONLINE 0 0 0
gptid/d20a2730-f9ec-11e2-9b6e-00252289e35b ONLINE 0 0 0
gptid/b31054b6-f58c-11e2-9147-00252289e35b ONLINE 0 0 0
gptid/b378f86f-f58c-11e2-9147-00252289e35b ONLINE 0 0 0
gptid/b3f924b2-f58c-11e2-9147-00252289e35b ONLINE 0 0 0
gptid/b456a8d3-f58c-11e2-9147-00252289e35b ONLINE 0 0 0
errors: No known data errors