Here is something to also consider, especially if you have computer SNAFUs, an old computer, or a slow internet connection. Sometimes I've saved my work to have the internet connection go down and the page has to be refreshed, and after doing so, I've lost my update.
Before I save, I ALWAYS click CTRL+A and then copy. If the page doesn't save and refresh, I have the data on my clipboard and can paste and re-save.