Created Unassigned: Copy worksheet and insert new row [15337]

When I copy a worksheet and insert a new row, the generated file is damaged. My solution is to use

_added._sharedFormulas.Add(key, (Copy._sharedFormulas[key]).Clone());_

in _CloneCells_ function

and using

public Formulas Clone()
{

Formulas newF = this.MemberwiseClone() as Formulas;
newF._tokenizer = SourceCodeTokenizer.Default;
return newF;
}

inf _Formulas_ class