after edit anchor tag appering in ckeditor in text 'anchor'

Question

In my web application i have to compare two documents and in Base document text is in html format i have anchor tag like this

 

     after compare this base document to another second document and i found the result i saw the anchor tag shows in ck editor like this `Job #: Anchor` 

 

`red color strike through Anchor` when i see html code for this Anchor in compared text it shows  like this <span style='color:red'><s><span style='text-decoration:line-through'>Anchor </s></span></span>

 

 

 

 

how can i disable this anchor in compared text(result text) it is displayed in ck editor

Thank you