Make a copy before you need one
Open My List and choose Create backup. Copy the entire text, including the opening and closing brackets, into a document you control. It contains saved title identifiers and episode checkpoints, not video files or a streaming account.
Move to another browser
Open the same catalog in the destination browser, visit My List and paste the text into Restore backup. Choose Merge backup. Films already saved there remain in the list. Existing episode checkpoints in the destination are kept rather than silently replaced by older ones.
When a backup will not import
A partial copy cannot be read reliably. Copy the full text again and make sure you did not include a document heading or commentary around it. Backups for other websites are not interchangeable with this format, even when their film names are familiar.
A list depends on available browser storage. If storage is blocked or full, the page reports that saving failed. Keep the text copy somewhere separate before clearing site data, changing profiles or replacing your device. Open My List to make the copy.