To be honest I can't remember all the changes that were we made but all the changes I have made have been via this support channel and through the advice given here. so should be in my history. I think some were added to the sheets and others were through the custom port but I can't remember exactly.
Do the custom CSS bits add to core files too? Can you help with advice as to what action I should take?
Will it remove the google analytics, my cookie prompt, logo style etc? I feel like the update would be a lot of work and if there was a way to simplify it that would be great.
All the best
Chris