Export Posts for Use As Regular Posts

Hello, I am developing a new website for a client. Their old site was developed many years ago using Advanced Post Manager (APM) for several post types. The new website no longer needs the functionality provided by APM. It does, however, need the content that the plugin is responsible for. I can export the APM post content using the WP export function. I can NOT import the content into the new website. I get the following error: “Failed to import “Events, Lectures and Classes Support the Six-Week 2016 Orchid Show”: Invalid post type news Does anyone know of a way to either export APM posts as regular WP posts or Import APM posts into a non-APM WP environment? Thank you, caustin