Upgrade Effect - cant edit editable fields

Hi all

After upgrade from Domino 6.5 Designer to Domino 8.0.2,

I found there are some editable fields that cannot be edited in web browser (it’s still editable in client browser).

I have tried create another field in that particular form, the new editable field cannot be edited also.

Anybody experience this?

Anybody can help?

Thanks in advance.

-Rut-