Help please! I think my very first Tama disappeared after moving to the water field for the 1st time! 😫

I'm on level 5 with my 2nd Tama, which is a paddle young now. I moved fields to water while it was a babymarutchi. When it was in the land field, I could see my adult Furawatchi, the very first one that I grew, playing in the background with the outside toys along with the babymarutchi. After I moved baby to the water field, now I don't see my Furawatchi anymore 😭

I was under the impression from what I have heard from others that I should still be able to see it in the land field when poop is being collected, since the cleaner goes through all fields at the same time. As well, I've seen comments that my Furawatchi would be able to go on the egg hunt, with my new paddle young. I thought maybe it wasn't because it's a land creature, but I've heard others say that they should all be able to go on the egg hunt whether they are land, water, or sky Tamas. I'm just really trying to figure out if I lost my first Tama somehow?

I'm also very curious as to how easy it will be to switch between the fields once my paddle young finally becomes an adult. I'm afraid to hit the switch field button right now before my paddle young becomes an adult in case it will make it a land creature all of the sudden. Can that happen? I also know that collecting golden poop in the fuel tank has something to do with traveling, but I don't know if that has to do with the fields. Is there anyone that knows and could expand on any or all of this? 🤞😊