CF83 online form and cover letter

Hi, I left the UK 20+ years ago. I filled out the CF83 form 'online' to get confirmation that I could pay Class 2 contributions. However, I did not see anywhere in the form where I could upload proof of my having left the UK. Does an agent get back to me asking for this at a later date? Thanks.

Hi Fionn,
Your completed CF83 application form should be sufficient for our International Teams to process.  If they require any extra details from you then they will request it.
Thank you.