Hello Luis!

Once you have built and uploaded your website on the internet, you simply have to keep working on your Website X5 Evolution 9 project and publish again when you have changed something in it.

In Step 5 - WebSite Export to the internet, there is an option on the bottom left corner that you can use if you do not wish to upload your entire website again, it is called ''Export only the files modfied after last export on date...''. Please use this option.
Thank you!