Hi Pavit,
I too have the same issue. Modified a proection group while a tape backup was running and caused it to fail. Re-ran the tape job and the error vanished but nothing happened. Manually re-running the jobs from 'Failed jobs from yesterday and today' and it
asked for a new tape, put the tape in and after clicking to use the new tape - Error 3609.
Only thing I can think of to get round it is to modify long term protection date temporarily and change it back after the jobs are finished. Microsoft, please sort this bug or advise as re-running after taking a deleted SQL database off the protection group
shouldn't cause it not to run.