This is because these maps were made in CC2, before things like effects. So to have a outline on the text, it is actually two text entities with the exact same text, one with regular filled text, and the other set to only show the outline. This was done to make the text more readable.

However, this means that you will need to do the edit twice, once for each text entity. If you have trouble selecting the right one for edit, try hiding some of the TEXT layers (either everyone marked OUTLINE, or everyone NOT marked as such.

As Wyvern said above, it is better that you start your own topic if you have any follow-up questions that are related to your own work and not the atlas repair project.

Not directly, it want a relative change.

But, you can get the desired result by just typing in the new size divided by the old size on the command line, as in, just type the actual calculation, no spaces. So if the old size is 3.7 units and you want it to be 2 units, when it asks for scale factor, just type

2/3.7

on the command line when it asks for the scale factor.

You do need to know the old size though, which can be found using the distance tool in the info menu.

This is commonly used when inserting an existing map to trace by for example, just insert the image, measure the distance of the scale bar in the inserted image, and use that as the basis for scaling.

The map from the session.

Use the trim tools, such as :CC2BREAK: to create breaks in lines. Combine it with the various modifiers, such as :CC2MODINT: to start/stop breaks exactly where the lines meet with the line from the other room.

You can then combine the line segments into one path using tools such as Combine Paths if you need to. (If you need to depends on how you are going to use them. Just having individual paths that just meet up in the exact same point is often enough.)

The symbol behavior is down to you having lots of unrelated stuff on the HEX/SQUARE grid layer. Hex symbols are special symbols that automatically align with the hex grid, but all that other stuff is basically just confusing them.

As for the export, it looks for the lines on the MAP BORDER layer to see what area to export (If you have the restrict to map border option on), and if you check that layer, you'll see that the defining lines (green in your map) just covers the map area, and do not extend to include those informational areas.