Backup problem with BE2014

Hi,

I found status is "Active: queued" and job has been running for over 4 hours (refer to 0002 and 0003).

I assigned 2 slots (slot 12 and 13) for a backup job.

Found the backup in slot 13 is in Nov 2015 but slot 12 is in Jul / Aug 2015.

• Why tape slot 12 not used, it's appendable  ?

Tape in slot 13 is "media full" but in slot 12 still available (refer to 0001).

• If tape in slot 13 was full, then why tape in slot 12 not use ? Since both tapes for this job.

Thanks !