Issues with names in the format Last, First Middle Suffix where Suffix is I

[ThinkCode]

Here are some examples -

`

FULL NAME	p_first	p_middle	p_last	p_suffix
MAIER, AMY LAUREN I	AMY	LAUREN I	MAIER
CHANG, ANDY CHUAN I	ANDY	CHUAN I	CHANG
CHUAN SUN, VIVIAN F I	VIVIAN	F I	CHUAN SUN
COVINO, PETER CARMINE III	PETER	CARMINE	COVINO	III

`

When Suffix is JR or II or III or other suffixes, it does a great job. Is a suffix I not valid? I have a bunch of names using I for suffix.