@alwynispat The tool I wrote uses the Mastodon API (created and maintained by the Mastodon developers) — it's the same mechanism used by clients like apps on people's phones.
But yes, anything that touches data does have some potential to disrupt it. Circumventing the API to manipulate the database directly would definitely be a worrying idea.
@tokyo_0 ah since it’s use api, then the post date will be latest instead of being backdated. Ok then, shouldn’t be much of an issue.
Users could essentially run the import themselves.