Nesting - Any way to keep the WCS setup constant and set the stock body to automatically selectable

[Cave_Master]

When I run a nesting study the orientation of the parts and stock rotates from how the parts already were set.  I'm not sure how to avoid this I have tried a few different things but keep getting the same result.  Either way each time I program a sheet of parts I first edit the "setup" and select the current manufacturing model.  Each time the WCS origin is reset to different corner of the sheet with Y direction across the narrow part of the sheet and X direction the length of the sheet.

I am wondering if there is a way to keep the WCS origin and axii in the same spot across all sheets in a nest study.  In the meantime I wonder if there is a way for the stock to automatically be selectable.  Each time I program I first have to edit the manufacturing model and change the stock to selectable so that I can select the edges to use for X and Y axis and to select the WCS origin.  It just seems like this could be automated a little more.

[seth.madore]

I've asked a member of the Nesting team to weigh in on this question, as it's outside of my realm of knowledge. Hopefully we can both learn something!