Four system wide measures don't compress

I still have this problem even after upgrading from Version 0.9.3 to Version 0.9.4. [Windows XP]

I will select the four system-wide measures which are in the middle of my music piece (dotted or solid selection lines). Then I press Shift + - . There is nothing happening until several taps. With version 0.9.3, I remember doing something like 37 taps before anything would start to move. With version 0.9.4, I tapped 27 times before anything moved. When it moves, it compresses into the measure just before the first system wide measure. If I select system-wide measures 2 through 4, I can compress measure 2 into measure 1, making a system with two measures (1 plus 2). That's about the only success I have. Any more strategic manuvers seem to end up with measures overlapping each other adjacent to my selections. One strategic manuver I tried was to insert a measure between two of these system-wide measures, and then, try to compress the surrounding measures with the blank one in the middle (I think?). I somehow got three measures together with the blank one in the middle. I figured I could copy and paste measures and move them around like a shell game. But why make it that hard? I would be pleased if I could get those four long measures down to two systems with two measures each, though three measures in a system would be better.

Dave Davis