ios 12 imessage streamlining
Is there a way to turn off the streamlining of imessages in ios 12? My ex-wife and our 2 teenage daughters share an apple ID. With the new "benefit" of streamlining in ios 12, all of their messages to and from me are lumped (streamlined) together. I can only send a text to the last one of them that texted me. This is not a benefit, not safe, and not conducive to being able to communicate quickly and easily.
iPhone 8, iOS 12