How should vtuber models sold to a new person be tagged?

I noticed we have tags for both kotoku koinuko and zinazuki (vtuber). The model was originally owned by Koinu but was later sold to Zinazuki. My assumption is to keep them seperate because the actual vtubers are different people but I can see an argument for merging them into one tag like how we treat OCs that have been sold.

wispydreamer said:

I noticed we have tags for both kotoku koinuko and zinazuki (vtuber). The model was originally owned by Koinu but was later sold to Zinazuki. My assumption is to keep them seperate because the actual vtubers are different people but I can see an argument for merging them into one tag like how we treat OCs that have been sold.

If we merge... kotoku koinuko (zinazuki)?

I think this is the first time we've had to deal with a situation like this.

I'm looking up both VTubers, and Koinu seems to have two other models associated with her, with her wiki page referring to them as her 1.0 and 2.0 respectively. Based on the credit given in ZinaZuki's pinned tweet, she seems to be only using the 3.0 model.

So we can't just merge the two tags because we could have fanart of the first two models. Of course, looking at Koinuko's seven posts, they're all based on the 3.0 model, so there is 100% model overlap in art at the moment. But checking ZinaZuki's Twitter has her showing off new models?

EDIT: Wait, she has her 2.0 too, so assuming full inheritance, those new models might've been Koinuko's previously too. What a headache...