I wrote something very similar. For mine I have a check box for whether I am interested or not (with perm storage). My presentation shows all new items first

I wrote something very similar. For mine I have a check box for whether I am interested or not (with perm storage). My presentation shows all new items first then previous items I'm interested in (checked), then all others. Each time I open it up I just click the ones I want to retain, all others drop to the bottom.