I have a weird situation on a winform project.

I have user control (with 600 lines of code around) with a datagridview. I change de ColumnHeaderStyle of the font and save it. After I save the file I close it and open again, the changes were not saved (although the asterisk is dissapeared), because the ColumnHeaderStyle is back to the former value. This is driving me crazy because I cannot change any visual thing in the Designer.

Any clue?

Thanks in advance.