That’s a horrible plot! It literally goes against everything the second movie set up! Fleetwood never send the foodimals into the FLDSMDFR (besides I’m pretty sure they wouldn’t even fit back inside of it. What are you even talking about?), if he did that, all of his friends would ditch him.

Here’s a better plot:

Flint marries Sam, and rebuilds Swallow Falls with better food and better life, with a little help of the foodimals.

That’s literally what happened in the end credits of the second movie!!!

You mean after the events of the second of movie?