Dynamic data - Export area

Hi, please check the attached document.
the story is the following.

Consider that this is a template, where a user clicking the "export" button can create a clean excel document with the values appearing in that area, comprised between A8 and A14 and C8 and C14

• The column "A", contains numbers that will be used as ID when exporting.

• If a user insert another line, the column must increase automatically and always give increasing values

• the data to export are the lines with an ID and having A, B and C, so in case there are more lines, these should be exported as well

How to achieve this?

Hi, is this really difficult? or not achievable with excel?
thanks for your replies...