Aspose word - the highlighted text after save is not able to unhighlight it

Using aspose word license, I have highlighted the place holders / normal text then after save. I open the document, i see that highlighted text. But when i do unhighlight or to remove the highlighted text not able. In general, when we unhighlight it should work. But its not working. Any solution or code sample.

@balajipentela18
Could you please ZIP and upload your source code and all input and output documents here to reproduce the issue? We will check the issue and provide you more information.