Certain barlines (like double BL) make a difference when creating mutliple rests in the parts - by default they break multiple rests. So far so good.
However, when I use a previous document as a template for a new one (same version, just like a week older or so), remnants of "funny" measure attributes remain in the empty template document. Only when you later create the parts, you find out that multiple rest suddenly either don't break or break in places where they shouldn't. This seems to be due to remnants of the old document's measure attributes.
Since you never know where or when this happens, in each part I have to go to the selected bar and check or uncheck "break multiple rests" manually. Tons of work sometimes - for no reason.
Even setting the emptied template document to all normal barlines does not delete the old information that messes up multiple rests. There should be a way to "retranscribe" all the actual barlines used in the document and set them back to their default values. This would put an end to the above problem.