Pre - Assigning Break Out Rooms - Pre Assignments are not working

I have scheduled two Zoom meetings with each meeting having a break out session during a portion of the meeting. I have created and pre-assigned individuals to various break out rooms; however, once I launch the meeting, the individuals who were pre-assigned to the rooms are no longer showing up as assigned to a break out room. 

 I double-checked prior to the start of the meeting and everyone was showing up assigned to a room; however, once the meeting launched, it was as if I had never made any pre-assignments. Help please.

Did I read correctly that if someone does not have a Zoom account set up that they are not able to be pre-assigned to a break out room?