Problems copying attributes with "Current Attributes" in Phoca Cart 5

[amax2]

I'm trying to use the "Current Attributes" feature to copy attributes from an existing product to a new item. The idea is to select attributes that have been previously created, but when I choose them from the window, absolutely nothing happens. The attribute selection window doesn't close, and the attributes aren't applied to the new product.

Has anyone encountered a similar problem or knows how to solve it? Is there a specific setting I should check or a step I'm missing?

Thanks in advance for any suggestions!