Manuscript target discrepancy

I wonder if anyone has run into this problem: My manuscript total gives the incorrect readout when I first open the project. But if I compile the project, the correct manuscript length appears. Is this a strange glitch or am I doing something wrong? Added two screen shots. The bottom one (with the lower number) shows the target as it appears after opening, the second shows the (longer) correct length after compile.
Screen Shot 2016-07-22 at 9.37.52 AM.png
Screen Shot 2016-07-22 at 9.37.18 AM.png