Not sure on dates but you might like these, link mentions if export or licenced & round info does say this about BM-15 this round remained the most advanced 125mm round available to Soviet client states until the end of USSR. BM-15 and its local derivatives were license-produced in many countries.
Zip is to Rosoborn Exports Cataloge who are the main Russian Arms trader BM-42 is only APFSDS round for 125mm listed
Putting Rosbornexport in google should get you the site perhaps more current catalogue & air navy etc if want them. If your feeling really bold could try asking them for dates they can only say no
http://www.russianarmor.info/Tanks/ARM/apfsds/ammo.html
Ha its in the catalogue
www.rusarm.ru