AT:

• I can toggle a button to link the two diagrams on the migration mapping page
• If the link is active, zooming and scrolling in one diagram is automatically applied to the other diagram
• If one diagram is reset, the other diagram is reset too
• Activating the link does not change the zoom or scroll position of either diagram (no initial "synchronization" between the diagrams, only deltas are applied)
• Initial state of link is "on"