"You might not care that much"

No, I do too

Thank you, learned a lot with this video

Helpful overview

Great video. I think the reason your tokens on the ground level can't see tokens on the 1st floor is, you didn't add 1st floor into "visible levels" on the ground floor level config. You did 1st floor to ground, but not the other way round.
There is also stuff to do with surface regions as mentioned earlier by slagmoth, but I haven't figured this bit out myself either. That's supposed to be where you can get occlusion to work without having to add tiles. If you manage to get that stuff working please do another video as I'm sure we are not the only ones that are finding this stuff confusion at this point :)

Set the upper floor to be visible from the lower floor. Then, set up areas that you can walk underneath as tiles instead of making them a part of the upper floor's background image, since the background image won't fade out even if the tile underneath it does.
Then set the tile's Overhead settings the way you like.
Place a region on the upper floor in the same area and set its Surface up so the floor blocks vision. Now you'll see creatures that are near the edge from the lower floor, but won't see anyone who is close to the wall unless you back up.

Great video as always. Watched a two days ago then had that light bulb moment. You mentioned the map being empty for moving tile decoration. You might want to take a look or make a video of FA Nexus especially with their recent update. Yes its Patreon but if you are using FA assets you already get access. I have found it very useful for changing up maps and making puzzles with MATT. Especially running three games same campaign with same players in multiple. Really helps making small to large changes keeping things fresh for the players.

When you want to export only part of the map like the Walkway you can crop the area that you need. That way you don’t need to edit it further in paint.

You have to make a region or the upper level and set some stuff in there. I still haven't figured out how to get tile to be visible though or the floor. I was told that the pertinent example in the Restored Keep module is the region named "Second Floor Surfaces".

I also seem to have found a bug with upper level walls bleeding through to a lower level for token vision.

Good coverage, gonna have to mess with this later. Kinda excited to see it work. Not that I'm chomping at the bit to see anyone use a different map maker, but have you used Dungeon Alchemist for Map Making?

so dungeon alchemist wont really work with this right now? sad day since it imports as seperate images for the floors

for some reason, I have a bug,  I have about 1 in a 10 chance that I just don't get transported to another lvl I could move in and out and it wokred
does anyone have this issue ?

I'm having a problem with, for lack of a better word, "Soft" walls I made a map where the Stairs have walls on either side, but if I move a token towards the Stair region from the exterior of the wall, it "Phases" halfway through the wall.

How do you make the presets for the map? Do you have a set measurement for each one?

How to work stairs now? I Cant found info about that

Do the upper level maps have to have transparency or can we define hole regions to see levels below? Most of my maps do not have transparency

I use Dungeon Alchemist for all my maps, does the new version of foundry allow you to add multiple json files to a scene? As DA can export walls and lights for all levels and that would make things much easier when importing into foundry

bit behind on v14, are the doors sound effects and animations now built into foundry?

So, the thing you didn't show was all the work cut out all the hollow spaces between floors and such. How about a video where you show all the work?

If you have come gere to learn how to use regions he doesn't talk about it until 25:00. Time stamps would have been helpful.

I will get tons of hate on this, but I am a corporate trainer for my company and 28 minutes to get to the actual meat of the video when it could have been 10.
Thank you for the information, but please be more prepared. This was all over the place directionally. Make an outline for what you want to discuss, follow the outline and prepare your materials in advance. A single practice run can work wonders. You have the personality down (you are likeable), just work on preparation.

By following a plan, you could have explored more features in the same amount of time. It will take longer than impromptu videos like this, but when you find your system it will get faster.
Not hating, just trying to give some advice from a guy who went through this in a professional capacity.

How about you show how you created all your levels with the cut outs.  Without that, what you're showing is irrelevant.