The deep link to LX manage booking no longer works (https://www.swiss.com/in/en/login/pnrlogin?FirstName=[FirstName]&LastName=[LastName]&Locator=[PNR]) - "The page could not be found".

https://shop.swiss.com/booking/manage-booking/retrieve lets you enter last name and PNR to pull up a PNR, but I haven't been able to get it to load automatically by appending various combinations of FirstName, LastName, and PNR, so maybe if deep linking is no longer possible, that would be a better landing spot than the front page.