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When you have a multiple @If to eliminate NULLS there may be a better way:
@If( LotusNotesName != "" ; LotusNotesName ; @If( LegalName != ""; LegalName : @( NickName != ""; NickName; "Old what's his name"))) @Subset(@Trim( LotusNotesName:LegalName :NickName);1)
This will return the first non null from you list.