This function is used to change the key notation used in the Initial Key field or in a track variable.
The current value in the field will be modified to the selected format. The initial format of the source does not matter.
If the operation succeeds, the action test state will be set to true. If the operation fails because the source cannot be interpreted, the action test state will be set to false. In this case the initial contents of the field will not be modified. When running stepwise, the action test state will only be set to true if the function succeeds for all selected tracks.
Note that if you have imported both key values from AcousticBrainz, the function will only succeed if both values are the same.