Applying filters to stack images

Hi Everyone,

I am sorting a large amount of pictures (about 10k) in order to end up with only my very best so about 50 pictures. I shot many HDR and therefore stacked many to simplify my sorting.  Here is my sorting process:

1- Classify each pictures in folders by locations

2- Stacking the HDR in a group without creating the HDR yet

3- Apply a Red label to my favorites in each folder

4- Then applying a Keyword so that my favorites are placed in a Smart Collection

5- In the Smart collection, applying a Yellow label on my favorites to finally select a few pictures

ISSUE:

After stacking the HDR, when I apply any kind of filters whether it's a label or a keyword, this filter only applies to the first picture of the stack while I wish it applies to the group.

WHAT I AM LOOKING FOR:

Is there a possibility to apply any kind of filters to a stack without having to open it and select all pictures?

If not, I believe this is a glitch in Adobe sorting abilities, as I assume that one function of a stack is to ease the overall sorting.

Thanks a lot for your help.

and and my process is as follow