I got caught out with the new version of Excel - opened up another sheet to use as a template, make some changes, then did a save-as to the new name. Turns out

I got caught out with the new version of Excel - opened up another sheet to use as a template, make some changes, then did a save-as to the new name. Turns out all the changes were auto saving into the original sheet also. I miss having a distinction between standalone apps and web apps.