My update - I got a reply to my ticket and they did re-send the Pocket Pet Portal. I had to reply to ask for the Interdimensional Pet Portal (2000 limit) as well, but presumably they’ll send that too. No word about the lost title or anything else.
Also, for those that are getting the automated reply talking about UI resets and such, it sounds like maybe this is actually better for us as we ultimately get a faster response, BUT you MUST respond to that initial copy & paste reply so the ticket goes to a real person, see this blue post:
https://us.forums.blizzard.com/en/wow/t/cant-add-companion-to-your-account/690096/5
On another side note, since nothing had been fixed on my account and I figured it wouldn’t get any worse, I did another server transfer last night (I have a few lined up while the sale is active, and didn’t want to keep waiting in limbo for something that doesn’t seem any closer to being fixed). Interestingly, this time I did not lose pet battle training, though I hadn’t re-done any of the other lost stuff, so I can’t say whether things are any more stable. And I think I’ll wait on using the restored pet portals until my transfers are done, spent too much time dealing with this already to keep waiting on tickets every time.
I’ll make one last appeal to whoever may be monitoring these bug reports and may have the ear of the devs, please do right by us and restore what we lost. I’m not going to be toxic, and in the end if we only lost some inconsequential quest completions and have to re-do the pet dungeons and other one-time quests to get back where we were, so be it. But if we ended up losing something that cannot be recovered by players in-game, please take whatever steps are necessary to take care of it. Whether on sale or not, we all paid extra money for these character services, and some of us have spent a lot of time trying to provide info and get a resolution with little or no re-assurance that anything will end up being done. Please just don’t leave us hanging!