How to overwrite files when saving?

Hi, I need to know how to re-write (or overwrite, dont know which is the correct term in english).
Lets say I saved a complete project, then I load it and make some changes, apply fx, or trim a sample differently, or any changes. Is it possible to save this changes in the same file I uploaded? or the only option is to save it as a new different project?

Personally, I would save it as a new project, but I'm quite certain that you can overwrite your project

Just save it with the same names in the same folder. It will overwrite everything automatically except samples. It will ask you to overwrite the samples too, which you can always decide to do or not, depending on wether you made some changes to the samples or not that you would like to save.

Yes, listen to these men, they know.

When I had the 500, one of the things that became 2nd nature was the constant saving. Even if you raised the pitch a single octave up, you had to go to save and save everything. But later on, I learned it was best to save as Samples first, then save as Samples and Sequences, then save everything. Tedious, I know but keeps things where you left them.