The only change in item 7 was that the dialog was closed automatically if a load/reload command applied to the same file. There has been no change to the actual file monitoring code, which determines when a file has changed, since at least v6.35.
mIRC should only display the file change dialog if the modification timestamp of the file has changed since mIRC last checked the file. The only way to be sure if mIRC is displaying the file change dialog correctly is to use your own script for storing and checking $file().mtime values for files that you want to monitor. You can then see whether it is detecting a file change at the same time as the file monitor feature.
