Exporting bookmarks & adding/importing them to another file in Potplayer?

If I add bookmarks to a file and then move the file from one folder to another eg from My Documents to My Videos (or subfolders within them), the bookmarks disappear. Is there any way to prevent this?

I was thinking maybe I could export the bookmarks and then import them somehow.

I’ve seen an option to store the bookmarks as .pbf files, but then there’s no way that I can see to import bookmarks into a file.

Any advice would be much appreciated. Thank you.