Hm.
Vanessa and Alistair were recycled. Sort of.
Vanessa was not changed - she started in a AU Deathly Hallows fanfiction I was planning. She simply died when she was shifted over to the roleplay. Since she was in the same environment/context, I don't really consider it recycling but IDK.
Alistair was a small, vague plan that never even got a plot. He was not written for anything, he just appeared one day in my head, but I converted him to HAU when I found how he could fit there.
As a whole, I don't really do the full recycling thing. When you alter characteristics etc and just change the context to make them fit. Feels like cheating. It's no longer them. I don't really like it. With Vanessa, nothing changed, she just died but that was fine she was going to in the FF anyway. Alistair just wound up here. Doesn't really count. I guess. If the RP declines in activity or I want to leave, I tend to write my characters off as dead. So it becomes a 'closed chapter'. I do miss them, though.