Allocate Media to a Set and Make Overwriteable

Hi,

I want to "pre-allocate" a set of sequentially labelled tape library media to a particular media set.

I can associate the media with the set but all of the media immediately take on the media set's overwrite protection/appendable until period. What I'd like to do is allocate the media to the set and make the media overwriteable (thinking about it, if you allocate a scratch media to a media set, shouldn't it be in overwriteable status anyway?)

If I leave the media in the Scratch media set then I can't ensure that BE will use them when it selects a new media for the set.

Can this be done?

Thanks.