Import posts into portfolio pro

Hi

I have a bunch (200+) of normal posts under one parent category with many child-categories. They are effectively the old posts that we used to use like a portfolio on the website. That parent category is simply ‘roject-showcase’ and the children are countries.

I’ve tried different ways to either migrate these posts to become portfolio posts (using Taxonomy Switcher), but it just seems to add new portfolio type categories and not the posts themselves. If I run the switcher I get a single parent category that says it has 200+ posts, but my portfolio items remain empty.

I also looked at exporting the posts via the default Wp exporter (to xml) or even WP All Export and WP All Import and importing them back as portfolio posts. But after exporting and looking at the xml file, I get a little uneasy about importing 200+ posts if its not going to work as the fields don’t match.

So I just wanted to ask on here what you think would be the best workflow for this task?

Thanks.