I can't answer your technical questions I'm afraid. However, I can tell you that four jets turned up at the end of December 23. They started flying with the resident 48FW in early Jan 24.
Prior to that, Top Aces were operating three Alphajets and an A4 there, for, I assume, DACT missions. I'm not sure if the top Aces jets are still there though.
Hope this helps a bit.