Lines: custom properties are lost when layout changes
MS 3.3 / Win 10
Open the attached file. Copy the first measure to a blank measure.
Expected result: Copy should be an exact duplicate.
Actual result: The custom position and length of the line in the copy is lost. Not only that, but the same is lost in the original measure as well.
This also occurs if system breaks are added to a score which has lines with customised positions and lengths.