Sony MVS-8000X User Manual page 289

The key source name display/key snapshot button which you pressed lights
yellow.
Notes
If you save a key snapshot in a register for which the button is lit orange or
yellow, the existing contents of the register are overwritten.
Recalling a key snapshot
For example, the following procedure recalls the state of the M/E-1 key 3
settings.
1
In the M/E-1 independent key transition control block, press the [K-SS]
button in the key 3 control block, turning it on.
2
Press the key source name display/key snapshot button corresponding to
the register you want to recall.
Press the [K-SS 3/4] button as required, to switch between displaying the
key 3 registers 1 and 2 or registers 3 and 4.
The button you pressed lights yellow, and this recalls the key settings
(excluding the key insertion state (on/off) and key priority).
289
Key Snapshots