Endnote x7 relocated pdfs, change folder location for all attachments?

Signed up to ask this question, so thanks for clicking. 

I’ve recently moved home to finish my PhD and have taken my pdf folder with me. 

Endnote has been making a copy of the pdfs and storing them in a folder each, that pdf folder is now gone.

I was hoping to change the links for all attachments to point to the folder that I have all my pdfs stored in, e.g. the old link was 

E:\Documents\PhD\My EndNote Library.Data\PDF\2104714912\Gurnsey & Fleet, 2001.pdf

 and each had a different folder (bizarre btw, why not just have them in one folder?), now I’d like to change that striong, for all attachments to read something like

C:\Documents\articles\Gurnsey & Fleet, 2001.pdf

How can this be done? Even if could have access to the text file that stores all this info so I can edit the links in R or MATLAB…

Regards,

Alex