The condition keeps changing itself.

Hello, the condition keeps changing itself... I have it set to "copy a field". After I save it and reopen the condition again, it's changed itself to "calculate field"! This is severely messing my form. Please help!!

I think since you are trying to copy a value into text field, the system automatically converts it into a string (text). This can be only done with a calculate option, by default a value could be copied as number, which would not work. 

Following 'Calculate Value' condition will work as intended, a value will be copied as text into other field. 

But, I would suggest to use a regular Text box for Name if you would like to copy a value into it. A value from text field can not be passed into full name element.