Stamp 4 to Stamp 1 experience?

Hello Everyone,

Does anyone have experience changing their Stamp 4 to Stamp 1?
I recently read a post here on Stamp 4 to Stamp 1 being accepted but couldn't find a source of information.

I applied for EU5 Retention in Sep 20 and got a temp Stamp 4 till June 21, I think still have some time to apply for Critical skills and my company has agreed to it.

And any timeline on EU5 response?

Thank you.

https://www.courts.ie/acc/alfresco/f2a4 ... 52.pdf/pdf

I don’t think anyone will be able to share their experience considering this judgment was only delivered weeks ago. Even if someone applies for an employment permit right away, they still wouldn’t receive any result by now.