Removing relation on detail view

Hey there.

I am editing some drawings which were made by a former employee of our company and have run into a problem.

The centre of the detail view circle is locked onto a line in the drawing and I can't figure out how to unlock it. I need to move the centre of the circle on the main view so that I can make the detail view a bit smaller to fit in other information onto the drawing.

Any suggestions?

SolidworksDrawings And Detailing