I would say you need to adjust your work flow. It seems you are trying to complete 1 piece of the map before starting on the next. I recommend having a fully working map to play test long before doing your detail passes. Maps almost never play out like originally thought (at least not until you have a lot of experience), and any changes that you have to make are exponentially more time consuming if you already detailed the parts that need changed.
Here is my recommended work flow...
Pencil and Paper - Draw your sectors. Sector design is the most important aspect of a COH2 map.
Blank slate - create the map in editor, and get the minimum to save.
Sectors on map - Add all the territory objects and paint the territory.
Basic map features - Add in the buildings, roads, tree's, hedgerows, and basic aesthetics across the map. Very generic.
Play Test - Test your map, see how it plays. This is one of the most important steps in finishing a map. If you go too long without anything to show for your work, it becomes daunting, especially with the larger 4v4 maps. This will revitalize your initiative.
Adjustments based on Test - Maybe a fuel sector needs moved, additional line of sight blockers, or a cutoff sector needs adjusted. Maybe nothing at all needs changed.
Detail pass - Start adding in more tile layers, and layer them naturally. Put dirt on the bottom, add grass on top...ect.
Detail pass - start adding in detail objects, barrels, ammo crates...ect.
Detail pass - start adding SPLT's, usually one of the last things I do. This will really bring out that fine detail that makes a map really POP.
Do each detail pass map wide, rather than hitting each sector or section with a complete pass all at once.
When renaming a map, I recommend "Save As" from the editor into a new folder.
Then any associating files created and copy paste the content in the new folder. Technically this isn't required, but for me, it's best practice, so I don't overlook renaming a file, especially if the old and new names are similar.
Also, I recommend not using special chars in the file names (This may have been patched at some point, but originally this caused a lot of problems)
No spaces, "-"...ect
Instead, use only Numbers, underscore "_", and letters
Did you use the impass tool and paint impass? It should look like a traffic light button, and it paints similar to "painting" tiles. Left click adds impass, right click removes impass.
There could be objects with height edited to put them under the terrain. Objects that generate impass ignore the height of the object. They could also be above the terrain. If you have a cosmetic object above terrain, make the object visual only. There should be an option for it, when in the object placement tool, and the object is selected.
Check for a second object, that is named differently. Some objects are weird, and don't work like you would think.
Worst case scenario, if you cannot find another Pak43 object in the list, that works, if there is a map you know of that has a working one, you can make a stamp of it, and get it in your map that way.
Deep Snow, is "painted" using the hightmap editor. There is a checkbox labeled "top layer". You can configure the map for either snow or mud. Both work very similar.
It does make them move slower, along with a couple of other things.
I recommend checking out some of the stock maps, you will notice they detail the deep snow with SPLT tiles. There is an option "on snow" that allows them to render on top of the snow/mud layer.
Placement of the snow, should be considered from conception of the map, as it has drastic affects on movement early game. I'm not the best tactician, but if you ask around, I'm sure you can get an in depth explanation on where to place it for the best affect, without negative impact.
Most likely, you are placing the wrong object. Some objects are for visible aesthetics only, and have no actual function. Keep looking for different objects that are mines. I'm thinking they will be located with the weapons that can be placed on map and picked up. There is a slight chance, they also don't exist in the object list, and you will need to stamp them from a map that has them working as intended. Similar to the light post situation.
Also, individual mines will work the best, not a minefield object. Be sure to set them to world as owner, if you want them to be indiscriminate.
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