default controller reappearing

hi

in my soution i am not using any forms with the default controller instead using custom nav forms in tabless tab panels. all forms have the contoller property set to none. when i export my soution to file and import the solution into servoy on my notebook the default controller begin to reappear on most but not all of my forms!

I am using servoy 2.25 and mysql 5 for the solution data and repository server.

would appreciate any help