Create a copy before changing browsers
Open My List and choose Create backup. Copy all the text that appears, including the opening and closing braces. Keep it in a note or document you control. It contains saved title identifiers and series checkpoints, not a movie file, password or account token.
Merge it where you want to continue
In the other browser, open Flix2day My List, paste the text into Restore backup and choose Merge backup. The tool adds recognised titles that are not already saved. If the receiving browser already has a checkpoint for a show, it keeps that checkpoint rather than replacing it with the imported value.
The confirmation reports additions and skipped entries. A backup from another brand, damaged JSON or an unsupported version is rejected. An unknown title cannot be turned into a working catalogue page simply by importing its identifier.
Check the result before discarding the copy
Open a saved show and read its checkpoint. Check a few movie cards. Keep the backup until you are comfortable that the choices you need are present. Clearing website storage later can remove the local list again.
Go to My List to use the tool. A backup is a convenient transfer between your browsers, not automatic cloud synchronisation or an ongoing connection between devices.