Type-kun said:
Nope. We'll have to be extra cautious with mass updates in the future, since they are not "take search, add tags", but "take search, remove searched tags, add new tags". We're lucky this case is relatively easily fixed (unless someone populated new *_threesome tags by hand earlier/later).
We are indeed lucky. This is very dangerous. :O
We should create a wiki entry for bulk updates mentioning this (like help:tag_implications).
I should have proposed the following mass update script:
mass update 2girls 1boy threesome -> 2girls 1boy threesome ffm_threesome
mass update 2boys 1girl threesome -> 2boys 1girl threesome mmf_threesome
mass update 3girls -1boy -multiple_boys threesome -> 3girls -1boy -multiple_boys threesome fff_threesome
mass update 3boys -1girl -multiple_girls threesome -> 3boys -1girl -multiple_girls threesome mmm_threesome
Type-kun said:
There. I think that should have restored everything, but if someone did a double-check, it would be great.
Checked:
ffm_threesome -2girls -1boy
mmf_threesome -1girl -2boys
fff_threesome -3girls
mmm_threesome -3boys
Looking good.