I have heard this as well. A relative of ours had the name “Shlomit”, which she added a new name “Shulamit”. To the best of my knowledge Rav Shach ZT”L held differently though. I had a sheilah with a bas bayit of ours by the name of Nogah, which she thought it was a bad klipa, which it actually isn”t. I told her to ask Rav Shroya Debltsky, who told her to keep her name.
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