bottom ball joint query

I've just had the bottom ball joint on my E200 wagon pull out of the bottom suspension arm. Luckily I was only travelling slowly when it happened. I've read that the early W124's had removable bottom ball joints, whereas the later ones didn't & you have to buy the complete bottom arm to replace the joint. Mine is a 1995 model, which if the above is true, should have the non removable type joints. However, I've just contacted my parts supplier, given them the year & registration number & they tell me that the car should have the removavble type. Is that possible?? or do all later cars have to have the a bottom arm changed??

Thanks in advance....Nige