[MrVanHool]

Are the numbers of all new KTEL Attica buses known? Like XEH-8201, 8202, 8205 etc?
Buses XEH-8344 to 8350 were really in KTEL Attica before being transferred to Thebes, as the export lists of the Netherlands say?
XEH-8369 — KTEL Corinth?

I see a lot of new city bus numbers, considering that KTEL already had intercity buses with these numbers (for example, almost all Corinth buses). Are the old (intercity) buses being renumbered or are they staying with the same numbers? For example, in Corinth there was the number 2 Safari KPT-9344, and a new Citaro XEH-8377 came, what happened to Safari?

Thanks in advance

So, let's see..

The buses of KTEL Attikis aren't fully numbered. There's no answer why! 
ΧΕΗ-8344 up to ΧΕΗ-8350 are in KTEL Thivon from the first day.
XEH-8369 is Citaro LE ex Berlin and operating by KTEL Evoias.
The new buses of KTEL Attikis are Citaro LE Ü, right.. 

At the end at KTEL Korinthou and KTEL Attikis you can find urban and suburban buses with the same fleet number. That's based on the fact that the buses in Athens can't work nowhere else cause they're equipped with OASA's speciallyties.