When I locally as a dev try to create a package with the sitecore package designer, it seems impossible to get all items dynamically, that are (source items dynamically) changed or created the last 60 days (or to get any filter to work at all).

My goal is to create a package to deploy the latest changes on dtep environments by the installation wizard "manually". All attempts to see created/updated items in the \sitecore\templates folder (for master db) fail. No errors are logged in the log file, neither i'm able to find any hints or errors somewhere in the network traffic log, neither with the browser's console log.

I am able to make this filter work for content items under any site's content tree. So why Sitecore is not happy to show me the created and updated template items? I'm looking in preview mode for the selected source, but also generating the zip fails (seems logically to me as preview mode isn't showing me anything as well).

When saving the designed package, and opening the package project's xml stored on disk now, I can see the templates folder is selected as search root, and the filter types CreatedFilter + ModifiedFilter is set to NotOlderThan 60.
Strange enough, after editing this project with the package designer, and click the already selected Templates folder as search root in the package designer the search root is reset to the /sitecore/content/home item. When saving the edited project again, the search root is cleared in the package's project xml that is updated after saving the project in the package designer. It's not storing the \sitecore\content\home item's Guid... OK, it's not a deal breaker here, but I think thats weird too.

After multiple time-wasting attempts to get the package designer to work in this case, I gave up... is it really impossible? Why is this option to filter on the templates-folder available anyway, then? I can't find any info on the net either.

And why some item names (like Templates) in the search root tree (in the package designer source's screen) are green-colored? It must have some special meaning.

Only alternative I have left now, is to manually select each changed template with the "add items statically" option in the package designer.