media set change

Scenario :

B2D disks :

b2d 1

b2d 2

I have taken full backup of server to b2d1 and now would like to take daily incremental to b2d 2. Can we do like this ? Would we be able to restore data in a normal way ?

2. B2D 2 was in "keep data for 4 weeks with 6 days append" media set. can we now change it to other media set "keep data for 4 weeks with 1 day append" ?

Will all the IMG folders and .bkf files be intact with their data in folders or will there be any data loss ?

Thanks