followed hashtags not included in follows export/import

[timtoo]

Steps to reproduce the problem

1. export "follows" using csv download on the setting page
2. import the following_accounts.csv into other account

Expected behaviour

The hashtags I follow should be exported with the rest of followed things

Actual behaviour

The followed hashtags do not appear in the csv file

Detailed description

Migrating to a new instance, I downloaded my follows (following_accounts.csv) and imported them to the new account as instructed. The accounts I follow of course were fine, but I was surprised to find the hashtags I follow had disappeared.

I understand following hashtags is a very new feature. Perhaps the export/import aspect has been overlooked.

Specifications

Mastodon v4.0.2

[connorshea]

The importer code will also need to be updated to support this.

For reference, hashtag following was implemented in #18809.

I think one major problem is that you'll need to export the raw text names of the hashtags, rather than their tag IDs. Which is fine, but if a smaller instance has never seen a given hashtag before, it'll need to create it as part of the import. I think that's fine, just a bit of a weird implementation quirk that'll need to be considered.

[FrancisMurillo]

Would like to try my hand with this. Would it be better to have another row for following_tags instead of merging follows and tags in one CSV?

[Marty-Crabneck]

Would like to try my hand with this. Would it be better to have another row for following_tags instead of merging follows and tags in one CSV?

I'd throw them into the "Follows"-CSV. And while you're at it, perhaps you'd also like to implement this: #20802 (comment)