Bobby's passport shows his name as Bobby James Ewing. However, his legal name is Robert James Ewing (Bobby being a hypocorism of Robert). Passports may only show a person's legal name.
April's passport states that she was born in Dallas, Texas. However, Dear Hearts and Gentle People (1990) revealed that she was born in Springdale, Ohio and previous episodes, beginning with her introduction in Trompe L'Oeil (1986), always indicated that she was not from Texas.