Horizontal frames vis à vis instrument names

In my ongoing process to convert my Ms3 scores over to Ms4, and do a little layout clean-up in the process, I have encountered a glitch:

Often, I would indent a system by creating an horizontal frame--this would display as:
(Margin)--Frame--Instrument name--bracket/system start

In Ms4, this displays as:
(Margin)--Instrument name, (overlaid with) Frame--Bracket/system start

This creates a huge gap between the instrument name and the bracket. Deleting the horizontal frame and re-creating it does not help. I found I could move the instrument names individually using CTRL->, although I would have to offset the frames to move them out of the way, then return them to position. However, I find that when I close the file and reopen it, the instrument names are back against the margin--even if I have hit CTRL-S before closing.

I am attaching two files, to be opened with Ms3 and Ms4, respectively--Ignore the wide spaces between verses in the 3 file; that has been corrected. (In this process, I create copies of my Ms3 files, move them to the Ms4 folder, and rename them--that way, the originals are not lost.)

Any help would be greatly appreciated!--WF