Create a copy before you need it
Open My List and choose Create backup. The text box contains a complete record of recognized saved titles and valid series checkpoints. Copy all of it into a note or document you can keep. A partial selection may leave the backup unreadable.
Merge in the receiving browser
Open FlixtorTV's My List in the other browser, paste the complete text into Restore backup and choose Merge backup. The tool adds recognized titles that are missing and brings in checkpoints only when the receiving browser does not already have one for that show. It does not replace an existing checkpoint with an older imported value.
Unknown titles and invalid episode records are skipped. The result message tells you what was added and what could not be used. A backup belongs to this brand's list format, not every similarly named website. It is also not a video download, account password or automatic cloud synchronization.
Keep the meaning of the checkpoint clear
Record the last episode you completed. After merging, open an important series and confirm its reminder before continuing. Keep backups when changing devices or clearing browser data, and make a new copy after the list has changed substantially.