You don't have to reinstall the software. That preset is embedded in the map template, and can be regenerated from it. The preset is only needed if you need to re-apply it to the map for some reason.

To recreate the preset, start a new map using the right style, the CC3 Mike Schley Overland in this case using default settings in the new map dialog, then enter the :CC2SHEETS: dialog, make sure effects is turned on (otherwise the options are greyed out), simply hit the "New" button to create a new setting based on the current map, and name it CC3 Mike Schley.

That's a shame. But it is is up to you if you want to remake it or not, nothing else in the atlas depends on it, so everything else still works fine.

Here's most of the maps from this set included in the atlas. Which means we have now surpassed 1100 maps.

@Ricko I couldn't process Hearthglen, you had uploaded the wrong fcw to the post.

This is a property of those symbols, standard behavior on the SS5 trees.

This setting is often configured for symbols that you may want to place along another entities, but should not go in the middle of the other entity, such as a alley of trees along a road (or in a dungeon, torches on a wall). It allows you to easily make sure all of the entities have the same distance from the centerline of the target entity.

The reason you don't see it every time you place a tree is that it is only triggered if you actually align the tree to something else. If it is placed in free empty space, there is nothing to align to, so this step will be skipped. To force this behaviour, when placing trees, move your cursor over a line/poly entity in your map, such as a road. You'll notice that once your cursor is over the center line of the road, the tree will rotate itself to align with the road ("aligning" for a tree may not be very obvious, but you'll see it rotate anyway), and if you click to place when it is in this state, you will get the Offset behavior.

If it just seems to happen out of the blue, for example in an empty area, there probably is a line or edge of a poly hidden on a sheet behind there somewhere. Even if you can't see it, CC3+ will detect it.

I have a macro that draws one here, if you can use that as a base: