Agree, this is done.
updating post history, 521 rows affected updating posts, 432 rows affected updating PostTags associations, 416 rows affected removing/renaming old tag, 0 rows affected updating count for master tag, 1 rows affected tag remapping of [google-drive] and [google-docs] complete! remapping 0 synonyms 82 favorite and ignored tags remapped! Broadcasting tag-engine reload
A bit late now, but I'll post as an answer anyway.
I'm not entirely convinced this was necessary - while Google is busy amalgamating things (I suspect this is only the beginning), I think there is a place for categorising questions as belonging to the file storage product (example) versus the document editing product (example).
google-docs was already fairly broad since it encompassed documents, spreadsheets, presentations etc.
I know there is already a bit of a mix of terminology since the delineation isn't very clear, but I think it is something we could have lived with and worked around.
Also four hours seems a bit fast for a 500+ question change in a sleepy meta like webapps :-)