PDF hyperlinks stop working

I have created an editable PDF that includes hyperlinks that other users access and save to a new location. When you open the PDF from it's original location, all of the hyperlinks work.  When you save the PDF to a new location, all of the hyperlinks continue to work except for two of them, despite the fact that all of the links lead to Word docs that are in the same folder on the server and saved as the same version of word.

Something I have noticed is that the displayed path changes on the links that don't work.  Every link on the PDF displays the same message when the linked is left clicked, 'C:\Program Files (x86)\Microsoft Office\Office16\WINWORD.EXE' rather than showing the actual path. However, when you click on either of the two links that don't work, the same message box displays but with this, 'C:\Users\or01iw\Desktop\2. MA Eligibility Questionnaire.docx'.

The documents are not actually saved on my C:drive but are instead on a drive that each user can access. This is displayed in the actual link when I click on the links in edit mode but it appears that for some reason, saving the PDF in a different location causes the PDF to try and move the path to the users own space on the server rather than leaving it linking to the shared space where the file is located.

Can anyone suggest what is happening with the two links that stop working and how I might be able to fix the problem?