Grab&Go is organised per delivery date, and each date has a single fulfilment (one location, pickup or delivery). If the cart already holds Grab&Go meals from location A for a date and the customer switches to location B, the same-date items from A would be replaced, so Sprwt asks Each location has its own pickup/delivery. Switching locations will replace any Grab&Go items you have on the same date. Continue? Choosing Cancel keeps the current location and cart. Re-selecting the same location never changes the cart or the chosen pickup/delivery method. The warning is based on the locations saved in the cart, so it also works after a page reload.