Functions, modifiers, or data actions to copy data from year N to year N+1, or From Version A to Version B

This article may help.
https://kb.pigment.com/docs/clone-metric-data

Hey ​@Jules R ,

I think, you can use the feature of Import Data → Metric to Metric Import;
and perform the mapping example: From year 2025 to year 2026 in the Mapping Dialog box.
 

• Open the target metric
• Click on ellipsis from top right 
• Click on Import Data
• Select: “Pigment Metric” tab and then choose the name of your source metric
• In the dialog box, choose the year or version
   

• 

  Metric to metric Import

Configuration tab

 

Hope, it helps!

This article is very useful:
https://kb.pigment.com/docs/metric-import

Thank you so much for sharing, it helped me a lot.