When recording or copying a palette, if the destination location already has a palette recorded in it, you will be prompted with record options of Insert, Merge or Replace.
If you are moving a palette, only the Insert option is available.
Insert: creates a new destination palette. The new palette will be assigned a free location just before the one chosen, using a point number if necessary.
Merge: incorporates the new information into the destination palette. If the same fixtures and parameters are in both palettes, the new values will replace the old.
Replace: overwrites the palette information in that destination.
If you know that you are about to record, copy or move a palette to an existing destination, you can pre-select Insert, Merge or Replace from the Record Options Toolbar. This appears after you press the Record, Copy or Move keys.