Did not realize you were referencing the WooCommerce product import/export.
I suspect (but can’t confirm) it’s not reading the meta field since the subtitle meta key is kia_subtitle
and it is NOT prefixed with an underscore…. _kia_subtitle
like it probably should have been. But I wrote this ages ago and have learned a lot since then. ??
So I think there are 2 approaches that could work here.
1. possibly filter woocommerce_data_store_wp_product_read_meta
here: https://github.com/woocommerce/woocommerce/blob/3611d4643791bad87a0d3e6e73e031bb80447417/plugins/woocommerce/includes/data-stores/class-wc-data-store-wp.php#L113
2. map the meta to a custom import/export field. I do this in one of my WooCommerce plugins so it’s possible… a little tricky though.
Unfortunately, you will either need some custom development or will need to try a different importer/exporter to resolve this. I would like to say I will update the plugin to use a _
prefix, but that would involve writing an update routine and I have to prioritize my paying plugins.