Yamaha CS1D Operating Manual page 394

Global functions
Hint
If the state of unit connections differs from the
stored state, a popup window like the following will
appear.
This popup window will appear when a previously-
specified unit is no longer detected. If you click the
LEAVE IT AS A VIRTUAL UNIT button, the corre-
sponding unit will be changed to a virtual unit, and
the unit and patch settings will be maintained with-
out change. If you click the DISPATCH IT button,
the corresponding unit will be considered a blank
(empty) unit; the unit settings will be initialized and
the patch settings will be discarded.
This popup window will appear when a real unit
changes to an actual unit. When you click the OK
button, the unit settings will be initialized.
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This popup window will appear when a virtual unit
changes to a real unit. If the real unit is of the same
type as the virtual unit, the unit and patch settings
will be maintained when you click the OK button. If
the real unit is different than the virtual unit, the unit
and patch settings will be discarded when you click
the OK button.
This popup window will appear when the system
detects a unit that is of a different type than previ-
ously remembered. The unit and patch settings will
be discarded when you click the OK button.