Push and replace related post that you save by their post_id's in custom field. Distributor itself pushes all the origin custom fields data and this add-on will search for those posts base on their "original ID" in the destination site. When not found it pushes the origin post to the destination site.

A multisite that has sites linked through Internal Connections.

Define dtmd_block_field_keys and dtmd_post_field_keys which the custom fields that contain your "relationship" post_id's or an Array of post_id's.

We have two options to handle post meta fields:

A. We have an array with only id's [1, 23, 44]. B. We have an multidimensional array with and id index ['id' => 1, 'instrument' => 'fluut' ].

It's also possible to filter the id index via dtmd_post_meta_id_index

Example
Define via PHP which ACF field_keys the add-on needs to search for by adding it to the return Array. So for example if your attachment file field is named press_type_file then create this filter:

add_filter( 'dtmd_post_field_keys', function(){
 return [
  'press_type_file',
 ];
});

• Currently only supports Internal Connections.
• If you use ACF groups in your custom fields, please know that these are a bit tricky. Thesee values are saved in this format: groupkey_fieldkey. I haven't tried this yet.
• I have disabled the auto scalling of WordPress so that it won't create lorem-scaled.jpg files.
• I choose to run on dt_push_post hook, so a I know that all attachments / media have been pushed by Distributor and I don't need to do this myself.
• Pushing a post can take some time. See my issue in Distributor 10up/distributor#719
• I have set, but please double check the Distributor settings so that it's pushing all attached attachments on both Source site and Target site.
• If you need to push non-image files, like mp4 or mp3, enable this in Distributor via it's filter dt_allowed_media_extensions.