Updating Categories within a Collection

Hi,

I have a Collection of real estate products with a couple of hundred items that can each be assigned a Category to indicate location, and I'm displaying these with a list/detail view and a user filtered list.

My client has decided to rename one of the category items from 'Villa' to 'House/Villa' and my issue is that each Collection item must be saved before the Category change is applied in my list view. This behaviour seems similar to the issue raised in this forum thread https://forum.grabaperch.com/forum/07-19-2016-categories-not-updating-inside-collection-items.

Is there any way to force or trigger a save of all items within a Collection?

Thanks in advance for any help or suggestions.

Perch Runway: 3.0.14, PHP: 5.6.21, MySQL: mysqlnd 5.0.11-dev - 20120503 - $Id: 76b08b24596e12d4553bd41fc93cccd5bac2fe7a $, with PDO
Server OS: WINNT, apache2handler
Installed apps: content (3.0.14), assets (3.0.14), categories (3.0.14), perch_forms (1.10), perch_members (1.6.1), perch_mailchimp (3.1)
App runtimes: <?php $apps_list = array( 'perch_forms', 'perch_members', 'perch_mailchimp', );
PERCH_LOGINPATH: /perch
PERCH_PATH: D:\sites\XXXXXX\httpdocs\perch
PERCH_CORE: D:\sites\XXXXXX\httpdocs\perch\core
PERCH_RESFILEPATH: D:\sites\XXXXXX\httpdocs\perch\resources
Image manipulation: GD
PHP limits: Max upload 64M, Max POST 64M, Memory: 1024M, Total max file upload: 64M
F1: 3b606135b33e6a102526838f4152a807
Resource folder writeable: Yes
HTTP_HOST: dev.XXXXXX
DOCUMENT_ROOT: D:/sites/XXXXXX/httpdocs
REQUEST_URI: /perch/core/settings/diagnostics/
SCRIPT_NAME: /perch/core/settings/diagnostics/index.php