Yes, and actually your side question is what I would have recommended in an attempt to normalise or solve this one file you imported. To do so, select all of the items you wish to normalise in the binder, and then use the Documents/Convert/Formatting to Default Text Style menu command. This will ask you how in depth you wish this conversion to be—for a full conversion, just leave everything as-is.
That should fix whatever weirdness was happening in that one document, too. It sounds like it just had extra post-paragraph spacing applied to the stylesheet.
It seems the Documents/Convert/Formatting to Default Text Style menu command is still not available in the latest beta. Any idea when it will be added? I just imported about 300 text files into my new project, and they were assigned a tiny, unreadable 8-point font.