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PCDMIS Chaning Features While Measuring.

Hey guys, so I am using a romer arm to calibrate some old fixtures and I have run into the problem of PCDMIS changing features mid-measurement. For example, it will prompt me to measure a circle, but once I take the first point of the circle, it changes to another feature (not necessarily even the next one in the program). Has anyone ever had this problem before?

Thanks!