Okay. The issues you are seeing are basically due to deprecated settings.
The [logging]/status setting was deprecated a long time ago after the Options/Logging/Options dialog setting was added to enable/disable automatic logging for status windows.
The [dirs]/getdir setting was also deprecated a long time ago. The download folder settings are in [extensions], although mIRC continues to update [dirs]/getdir for backwards compatibility with older scripts that might use it. If you use:
[extensions]
n0=defaultEXTDIR:..\..\downloads\
that will do what you are expecting for downloads.
That said, what you've found is that newer versions of mIRC do not work in the same way when converting [dirs]/getdir for backward compatibility with pre-2000 versions of mIRC, so we are now going back several decades for deprecated feature support :-) I will see if I can change this in the next version so that [dir]/getdir conversion works in the same way as in the before-before-before times.
On a serious note: mIRC is full of backward compatible code that has been added with each new release to handle old settings/features. It is quite possible that if mIRC continues to be developed for, say, another hundred years, the amount of backward compatible code will eventually exceed the functional code. I would just like to let every know that, if and when we reach that stage, I may be tempted to ask an AI to just rewrite the whole of mIRC from scratch without any consideration for backward compatibility. Please make backups and plan accordingly.