Import multiple PDFs at a time

After finding out Prezi Classic is being phased out I thought I’d try and recreate a Classic Prezi in Prezi Next. To use nice crisp vector files I used to export illustrator docs as swf files - this no longer works in Next. I discovered that Next supports pdf files, which worked (clear background too), but I can only import one at a time. Am I missing something?

Currently, you can insert only one file at a time. Sorry for any inconvenience!