Regenate wp_bp_activity posts from the original posts of contributors

Thanks ! I just use your code to reset / regenerate my blog posts activities in BuddyPress in a single WordPress website (not multisite).

I just execute that like that in a custom page (page-123456.php). Work like a charm.

<?php global $wpdb; ?>

          <div class="wrap">
            <h2><?php _e( 'Import Blog Activity', 'bp-import-blog-activity' ) ?></h2>
            <form name="bp-iba-options-form" method="post" action="">
                <div class="bp-iba-options">
                	<label for="bp-iba-submit"><?php _e('Press the button below to import blog entries and comments left before BuddyPress was installed into the BuddyPress activity streams. Warning: If you have a lot of blogs and comments on your system, this could take a while.', 'bp-import-blog-activity') ?>
                    </label>

               <p class="submit">
                    <input type="submit" name="Submit" value="<?php _e( 'Import' ) ?> &raquo;" />
                    <input type="hidden" name="bp_iba_submit" value="1" />
                </p>
            </form>
        </div>

<?php

	//if( ! empty( $_POST['bp_iba_submit'] ) && $_POST[ 'bp_iba_submit' ] == '1' ) {
    if(true) {

			print "<pre>";

            $paged = ( get_query_var('paged') ) ? get_query_var('paged') : 1;
        
            $query = new WP_Query( array( 'post_type' => 'post', 'posts_per_page' => 2000, 'paged' => $paged ) );
            if ( $query->have_posts() ) : while ( $query->have_posts() ) : $query->the_post();
        
				//if ( have_posts() ) {
					//while ( have_posts() ) {
						//the_post();

						//echo "The post is: "; the_title(); echo "<br />";

						$filter = array( 'object' => 'blogs', 'secondary_id' => get_the_ID(), 'action' => 'new_blog_post' );
						$activities = bp_activity_get( array( 'filter' => $filter ) );

						if ( empty($activities->activities) ) {
							global $post;

                            
								$post_permalink = get_permalink();

								$activity_action = sprintf( __( '%s a écrit a posté : %s', 'buddypress' ), bp_core_get_userlink( (int)$post->post_author ), '<a href="' . $post_permalink . '">' . $post->post_title . '</a>' );
								$activity_content = $post->post_content;
								$post_id = get_the_ID();

                                $short_content = substr(strip_tags(apply_filters( 'bp_blogs_activity_new_post_content', $activity_content, $post, $post_permalink )), 0, 200).'...';
                            
                            echo 'user_id' . ' : ' .  (int)$post->post_author . '<br>';
								echo 'action' . ' : ' . apply_filters( 'bp_blogs_activity_new_post_action', $activity_action, $post, $post_permalink ) . '<br>';
								echo 'content' . ' : ' .  $short_content . '<br>';
								echo 'primary_link' . ' : ' .  apply_filters( 'bp_blogs_activity_new_post_primary_link', $post_permalink, $post_id ) . '<br>';
								echo 'type' . ' : ' .  'new_blog_post' . '<br>';
								echo 'secondary_item_id' . ' : ' .  $post_id . '<br>';
								echo 'recorded_time' . ' : ' .  $post->post_date_gmt . '<br>';
                            
							 bp_blogs_record_activity( array(
								'user_id' => (int)$post->post_author,
								'action' => apply_filters( 'bp_blogs_activity_new_post_action', $activity_action, $post, $post_permalink ),
								'content' => $short_content,
								'primary_link' => apply_filters( 'bp_blogs_activity_new_post_primary_link', $post_permalink, $post_id ),
								'type' => 'new_blog_post',
								'item_id' => $blog['blog_id'],
								'secondary_item_id' => $post_id,
								'recorded_time' => $post->post_date_gmt
							)); 
							
							echo "Importing: \"" . $activity_action . "\"<br />";
						}

				    endwhile;
                endif;
					// } //  end while have_posts
				//} // end if have_posts
			wp_reset_query();
			echo "<br /><br />";

		

    }