2 models as output problem of “analyzethl” Karamba component

Hi,
I am using Karamba for a structural check of a shell. I used a Kangaroo for the form-finding and then Karamba and in the output of the analyze component there are 2 models instead of 1 (my input is 1 shell). Indeed, in the shell view, there are two legends with different values and I don’t think it is correct to have from a shell two models. I can't understand the behavior of my shell with two models as result.

How is it possible to have this situation? How can I do to have one model as output?
Here there is the file.
Thanks in advance for the help.