Rats!
I didn't realize that when I changed servers followERs would be moved to qoto.org but followEEs are not migrated.
(& no, I didn't download an archive. I don't care about previous toots. And I misunderstood the statement that I could "re-activate your old account and download your data"; I don't see how to do that.)
So I shall have to start from (almost) scratch.
Anyhow, Movetodon will help find some from the old site:
https://www.movetodon.org/
Update.
I can still download data from my old server.
Downloaded following list, converted format to cvs, uploaded to new account, which currently says it's processing.
And one final update:
Trying again I was able to import a csv list of followees from my previous server.
It just required several tries.
But sadly 🙁 my effort to upload previous followees was not successful.
I shall have to search them out and refollow.