renaming package issue

[rafnews]

Hi,

I 've created several package under the "Use Case Model" category.
when i clicked on 1 package i can see all UC i created inside it.

when i rename the package or just fix the name, using property in the popup menu, all my UC which were displayed inside the package dissapear... my package is like empty in the use case model page...even if when i click on it, it display correctly all UC.

where is the problem ?

[rafnews]

If i rewrite the former package name, all UC (icons and texts) re-appear in the package symbol...
so how can i fix it ?