Make a copy before changing browsers
Go to My List and choose Create backup. Copy the complete text from the List backup box into a note or document. The copy contains saved title identifiers and episode reminders, not video files, passwords or a provider login.
Restore without replacing your newer progress
Open My List in the browser where you want the titles. Paste the complete text into Restore backup and choose Merge backup. The tool adds recognised titles that are missing and keeps checkpoints already saved in that browser. Importing the same copy twice does not create duplicate favourites.
If the backup will not import
Check that you copied the whole block, including its opening and closing characters. A backup from another brand is not interchangeable with this one. The tool reports unknown entries and invalid text instead of silently replacing your list.
What the backup cannot do
It cannot restore a list you never copied, recover a streaming service password or download episodes. If a title is no longer recognised in the catalogue, retain the original backup note and use the title search to find your film again.