Rare Chinese character 𨺧

𨺧 is a rare Chinese character recorded in the Jiyun, an old dictionary, in the spelling 叴𨺧 for a county name that the Book of Han, a history of the Han dynasty, writes 厹犹. The Han Dian dictionary lists 𨺧 as a variant of 猶, but the Kangxi Dictionary questions why Jiyun changed the form. That label alone does not establish that 𨺧 can be used in place of 猶 in ordinary writing.