Polylang Pro Slugs, Sync, and ACF

Use this skill when compatibility depends on Pro-only behavior rather than the core Polylang API.

Polylang Pro 3.8.5 adds major behavior in three areas:

• translated and shared slugs;
• duplicate/sync workflows;
• ACF Pro integration.

Guard Pro-only code:

if ( ! defined( 'POLYLANG_PRO' ) ) {
    return;
}

Translated rewrite slugs