Custom Post Type Template switching to archive.php after (any) plugin update

Hi,
Thanks for making the awesome CCTM plugin, i’ve been using it for years and am excited for the upcoming licensed version of the plugin. I have a persistent issue that until recently i haven’t been able to pin down the cause of. Using the latest WP and CCTM.

Issue: Everytime any plugins (possibly core as well) are updated, the selected page template for the Projects page gets set to the archives.php (as a temp fix, archive-project.php).
Stupid Solution: uncheck ‘Enable Archives’, save, check ‘Enable Archives’, save. Works everytime.

Custom Post Type : Project

Enable Archives : checked
Enable Categories : checked
Permalink Action : Custom

Using custom page template : page-projects.php (grid of Projects)

3 functions added to functions.php to enable Custom Post Type Archives (like a normal blog, linked to in the sidebar)

[ Moderator note: Code fixed, please wrap code in backticks or use the code button. ]

// add Custom Post Types to archive pages
add_filter( 'getarchives_where', 'getarchives_where_filter', 10, 2 );
add_filter( 'generate_rewrite_rules', 'generate_projects_rewrite_rules' );

function getarchives_where_filter( $where, $args ) {
  if ( isset($args['post_type']) ) {
    $where = "WHERE post_type = '$args[post_type]' AND post_status = 'publish'";
  }
  return $where;
}

function generate_projects_rewrite_rules( $wp_rewrite ) {
  $project_rules = array(
    'projects/([0-9]{4})/([0-9]{1,2})/([0-9]{1,2})/?$' => 'index.php?post_type=project&year=$matches[1]&monthnum=$matches[2]&day=$matches[3]',
    'projects/([0-9]{4})/([0-9]{1,2})/?$' => 'index.php?post_type=project&year=$matches[1]&monthnum=$matches[2]',
    'projects/([0-9]{4})/?$' => 'index.php?post_type=project&year=$matches[1]'
  );
  $wp_rewrite->rules = $project_rules + $wp_rewrite->rules;
}

function get_archives_projects_link( $link ) {
  return str_replace( get_site_url(), get_site_url() . '/projects', $link );
};

Thanks for the help.
Andrej

https://www.ads-software.com/plugins/custom-content-type-manager/