Strange Reset Of Resx File After Localization?

I've a very strange problem with the localization and the default language resx file.I can add a string entry in the file with no problem. After moving or resizing any of the object in the form, the default resx file, resets itself and then my entry is deleted.Has anyone had the same problem??Unfortunately I can't attach a test project I made, 'cause of some security policies of my network. This is the list of operations you have to do, in order to replicate the problem:create a new windows form project;add any object (ie button) and then change its text property to "Example";set the form's property Localizable = Trueselect one of the language in the form's Language property;change again the text property to "Example 2";get back to the "(default)" entry of the language property;open the Form1.resx file then add a string entry, finally save it;try to move or resize the object into the form and then open again the Form1.resx file. You'll se the entry just for a while and then the file resets itself.