Input forms - authorization problems when opening input form

Hi experts:

- We have a input form saved with a specific member for a dimension

- Then, we have restricted authorizations for an especific user

- When user try to open the input form from the BPF with a his member, the system issue an error because he had not autorizathion for the member of the input form

- Then, the system quit the dimension from the page axis

I don't understand why the system quit the dimension when I am accesing from a BPF for an authorized member.

Thanks in advance for your help