All initially generated splicing curves are inspected. Unused curves are
removed. The computation formula is updated to create the next curves according to
staggering rule and splice plies correctly.
- When Tamp the curves if needed is cleared

- When Tamp the curves if needed is selected

When the check box is selected, when splicing island plies belong to the same
sequence, the curves used to create the cut-pieces are not staggered for each plies: the
same curves are used for all island plies in the sequence.