Hi,
we have a excel template file called "specification template"
We populate cells G2 to G11 with site specific data and complete some tables below which automatically does some calculations and populates G12 to G15.

We then rename the file to the site name and save it as a excel workbook in a folder with a lot more files created from the same template.
We need the below sheet to automatically populate key data (G2 to G15) from these files.
Any changes to the source files needs to keep the mastersheet updated.

This sheet acts as a overview of all key data in the files saved in the folder.
Hope this makes sense?