Col. walls can be adjusted to align correctly before you save the map, so that after saving a map they appear correctly aligned. Saving to disk causes the problems with the moving Col. walls. Question: Does downloading or uploading maps to/from Forge Hub cause the same problem as saving to disk does?
The problem is whenever you save the map, because by definition no matter where you save the map you save it to a storage device of some type, whether it is thumb drive or hard disk. Initially, it will be the hard disk. The problem is when the file is written to the disk - period. You cannot save a map and preserve the precision in any way, because the map always saves to a file on a file system (regardless of the underlining storage technology), and that file is where data is written incorrectly (with precision loss). After the file is written to disk, it can be uploaded, down loaded, side ways loaded, etc., it won't matter. The precision loss remains in the file, regardless of where the file sits (regardless of the media it is on). The thing to remember is that once the Coliseum walls are written to the file and they come back from the file the way you want them to, then you should never alter their orientation. The settings in the file are what you want to keep, so leave them alone and they will write back to the file the way they are read from the file.