Two systems, not interchangeable spellings
Jyutping is a Cantonese romanization system and Hanyu Pinyin represents Standard Mandarin. A character can have distinct sounds and tones in the two languages; a matching Latin initial does not guarantee similar pronunciation.
A worked example
In the editorial sample, 陳安晴 is shown with Jyutping can4 on1 cing4 and Pinyin chen2 an1 qing2. Tone numerals belong to separate systems. Have a fluent speaker check the reading before making a decision.
Practical sound check
Read the full name after the surname, compare first and final sounds, and check whether the name is easy to repeat over the phone. Avoid assuming that a Mandarin-preferred name will have the same rhythm in Cantonese.