Both Russian QRG 999 and 1413 kHz are coming now with relatively good signals at this Kiwi SDR in Austria: http://oe3akb.ddns.net:8073/
No idea about QTH of the replacement tx.
Nils Düwel (2022-04-26)
It may come from Grigoriopol. The signal strength on this SDR http://kiwisdr-dorohoi.ddns.net:8073/ is very good. Signal strength of 999 is worse than it was, at least in my ears. The modulation is also worse that it was.