Hi Pilou,

> If I copy a curve ten times

Do you mean copied directly in the same spot 10 times, or have you made 10 copies in different positions?

The RemoveDuplicates command will only target exact duplicates, meaning objects that are copies of each other and are in the same position overlapping directly on top of each other.

If your curves are moved copies, they all have different x,y,z coordinate values for their control points and so because they have different data they are not considered to be duplicates as far as this particular command is concerned.

- Michael