I just moved kabuki onto my island with amiibo, but quite alot of people want him, and not gonna lie i'm kinda poor so I'm thinking of making him move out with another amiibo. If I move him out with an amiibo, will he be in boxes? and can I use his amiibo to get him back after the new one moves in?
As others have said, he'll be in boxes instantly after you complete the move-in dialogue with the campsite villager. So you won't have a whole day of him in boxes and you gotta act fairly quick if you're looking to sell him.
Day 1 you invite an amiibo villager to the campsite and complete their request
Day 2 you invite them again and complete their request
Day 3 Complete their request a third time and they will move to you island, if there is no space, you switch them out with another villager.
That villager will be in boxes for that day.
Day 4 The plot will say sold and that the new villager is moving. During this day you start the requests of the new villager (It can be the one that just moved out.
Day 5 The villager that moved in will be unpacking and you should complete the second request of the new villager.
Day 6 The new villager will be fully in your island, you also can complete the third request and move a new villager, for other another one that was already on your island or the one you just moved in. The villager you pick will be in boxes.
You can stop here, or you can start the process again in Day 7.