Thank you so much for your reply and for trying to help.

However I have already tried direct formatting for the strikethrough. The strikethrough is only for one word of the heading so I have not applied a style as that would render every word in the heading as a strikethrough. The one word as strikethrough via direct formatting in the body of the thesis does not translate to the TOC. That is the issue.

The other suggestion to bold one part of the Figure title also does not work. Direct formatting one part of that heading in the body of the thesis does not change the TOF - the whole title remains in bold in the TOF despite the application of bold and then normal in the body of the thesis.

Both problems still remain. It appears the TOC and the TOF does not pick up the direct formatting that I have applied to the headings in the body of the document. Why? How do I fix this?

Any other suggestions?