Hi,
I finally found out why it’s not working for me.
Aside of the post_meta was renamed to meta, I had to change code with array_merge of previous metas to have new metas to use EP_API::factory()->prepare_meta_types( $new_metas ). (This is what roelheersping was saying, changing post_meta.field to meta.field.value, the prepare_meta_types does that). Also I was using assignment of new values as $new_metas[‘meta_key’] = array($value); but according to code existing in plugin it should be $new_metas[‘meta_key’][] = $value; It shouldn’t matter I think, but it did for some reason. Also I used filter ep_post_sync_args_post_prepare_meta instead of ep_post_sync_args_post. All that and it’s working for me again.
