Here is a script that should do the trick by removing and adding the selected items. Maybe try with a copy of your collection first.
JScript
function OnInit(initData) {
initData.name = 'RefreshCollection';
initData.version = '2023-06-05';
initData.url = 'https://resource.dopus.com/t/collection-update-file-size-within/12044';
initData.desc = '';
initData.default_enable = true;
initData.min_version = '12.0';
}
function OnAddCommands(addCmdData) {
var cmd = addCmdData.AddCommand();
cmd.name = 'RefreshCollection';
cmd.method = 'OnRefreshCollection';
cmd.hide = false;
cmd.icon = 'script';
}
function OnRefreshCollection(scriptCmdData) {
var cmd = scriptCmdData.func.command;
var tab = scriptCmdData.func.sourcetab;
cmd.deselect = false;
if (String(tab.path).substring(0, 5) != 'coll:') return;
cmd.RunCommand('Delete REMOVECOLLECTION');
cmd.SetDest(tab.path);
cmd.RunCommand('Copy COPYTOCOLL=member');
cmd.RunCommand('Select FROMSCRIPT');
}
Save CommandRefreshCollection.js.txt to
%appdata%\GPSoftware\Directory Opus\Script AddIns
Add the new command RefreshCollection to a button, hotkey, context menu, etc. like any built-in command.