Forum Question before I upgrade to 4.0.1
 

i have a question about upgrading to the next version. I have 4.0 right now and I've modified templates, cms grids (altho if the grids are fixed i can re-apply them) I have not modified any of the PHP files at all, but i have installed a custom template.

My question is, what does upgrading to 4.0.1 do to all my settings and changes? Will it keep it all intact for the most part? I thought I would ask first before having to roll everything back in case it doesnt work.