Check out select nearby symbols and delete nearby symbols.

You're talking about new versions of the 3rd party CC3+ addons, which seems to indicate you already have (some) of them installed? If so, how old are your installs? While there have been some minor updates released, these have been mostly to fix certain issues, the collections haven't changed in a long time.

If you have one of the very old versions of the CSUAC, then it is probably best to remove that one before installing the updated version. It is not absolutely required, but it saves you from potential confusion in the future. But a clean install shouldn't be required.

However, you may want to make sure that it is your installation and not the map that is the problem. If it is an older map using the old version of the CSUAC, then maybe you already have the newer version, and reinstalling isn't really going to help you with anything.

Try this workaround:

Also note that both CONTOURSM and TRACED are commands that does this automatically, none of them require tracing by hand. You probably do want to use TRACED (after applying the fix from above)

Any entity can be moved with the :CC2MOVE: command [MOV]. (For pure command line options, non-visual move may also be appropriate [MOVE]).

Important thing when moving a landmass with stuff on it is obviously to select everything. If you just select the landmass, you'll only move the landmass, not the terrain and symbols, so you normally need to do a selection window to grab the right bits, but an alternative could be to hide all the sheets containing stuff you don't want to move (or better, but more complicated, freeze all the layers containing stuff you don't want to move) and then just select everything with the All (a) selection and move it.

To be able to move something, it is important that it is not on a frozen layer. If you are unable to move something in particular, check what layer it is on with the LIST command, and see if that layer is frozen.

Everything that overlaps itself in CC3+ causes that effect. It is a result from calculating what is on the outside (not to be filled) and what is on the inside (to be filled) of the shape.

The solution to that problem is always to ensure a line or poly doesn't overlap itself. If you need to have an overlap, then split the line into two separate lines. If split along an edge and not in a corner, you wont' visually see it is two different lines.