Rich Snippets only show up in Products then i resave them

hi

I did rebuild a site for a client based on old theme with wpbakery and WooCommerce 3.XX
Now everything is online and running with Elementor and Jet WooCommerce. I did instally Rank Math
and uninstalled Yoast SEO plugins. The import seems to work.. But not then it comes to the
Product pages. My single Products don’t show in google as Products in the Google structured testing tool.
Only then i go in side the Item under Rank Math Schema Builder and do Save for this post.
So basicly i need to resave this. The problem is i have 2000 + Prodcuts.
Is their a way to do this in a batch commmand ? Because that the only fix i found for this problem.