Tested it now.
1. if its only people the answer is yes. pack animals don't seem to go with.
2. short answer is yes. it generates a new map tile (60x60 by default) and if you build anything on it the tile stays like a settlement that must be manually abandoned. If you do not build anything it closes when all pawns leave the map.

1. There are several options on what pawns should go to the next tile with you - Selected Only (Selected only) or All your pawns on the map. You can additionally set it to "always ask" to choose best option each time you leave a map. So, by default, no, any animals will be left behind, but that's configurable

2. Yes! Main settlement is not affected at all and you can jump between them freely just like during raids on other settlements, for exampe. However it would be quite hard to manage, since travellers must be maintained with sleeping, food etc

That's fine - I like having 2 colonies at a time. This would just be another version of that, when I feel the home colony is ready to self-maintain for a few days. Thanks!

hhh

引用自 addvans：

So, by default, no, any animals will be left behind, but that's configurable

How is it configurable? When trying to enter a new tile with pack animals and selecting "Everyone", the "Area Revealed" popup doesn't go away. Clicking Confirm just creates multiple new empty caravans.

For clarity I created a caravan with 2 pawns and 2 muffalo and had them go one tile away from base, then chose "Walk this Tile". I'm not sure how else you can load up pack animals or how you could select them if you used Walk directly from the base.