Create several cursors.
Enable "Move cursor on click".
Click in the minimap.
The primary cursor moves, and the rest of the multiple cursor do not - they stay put.
The selection is preserved:
Select 3 lines of text
Do Add-multiple-cursors.
Move the cursor with a click in the minimap.
Note that the primary cursor moves, those 3 lines of text remain selected- one of them now doesn't have a cursor.
Moving the cursor with the minimap should cancel multiple cursors.