I uploaded my menu twice and now everything is doubled — what happened?

"Add to current menu" does not copy a dish you already have: if a dish with the same name is already in the same category, the file updates it, and only new names are added. You get doubles when the names do not match exactly ("Coke" and "COKE", a different spelling, or the dish under a differently named category), or when the dish on your menu is marked Sold out, because sold-out dishes are not matched. Fix those names in the sheet and upload again, or upload the correct file once with "Replace menu" selected: it hides the whole current menu and rebuilds it from the file. Nothing was deleted; past orders still show what was sold.