Next Slide Trigger

Hi

I recently imported a file from PowerPoint into Storyline 360 - the original PowerPoint had the slides moving on automatically and I deleted the trigger to 'jump to next slide when timeline ends' as I want users to select Next. Unfortunately, it is still automatically jumping to next slide when timeline ends - I've been through all 16 slides and reset the next trigger but this didn't work.

Could anyone advise if there is something that has come over from PowerPoint that I need to delete/switch off?

Thanks.

Dorothy