Once you make your guage swatch do you undo it to start knitting your pattern?
You can unravel it, or save it for the end in case you need to refer to it as you go along. If you have several skeins of yarn, just start the pattern with a new one. Some people save all theirs, but I don’t.
personal preference
i do mine, than unravel and start my project
some people keep their guage swatches