ETC Congo Family v6.4.0 - Manual (Page 600)

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Re-record A Palette - Merge Or Replace
When you re-record a preset or palette where attribute information already exists, you will
get a choice of merging or replacing the existing attributes.
• Merge with existing will add the changes for the selected channel(s)
• Replace existing will replace all values in this Palette with those of the selected
channel(s)