Pay elements not displaying in ICP when already assigned to an other ICP

Hi,

I have create the following pay element:

• MBO Percentage

I have successfully assigned this pay element to the Individual Compensation Plan (ICP) called "Altra Retribuzione"

I want to add the same payelement to a different ICP, that is called "Retention"

When I look for the element I can't find it.

Why this is happening?

Regards,

Clarissa