Priority-based member activation

Hi

I have a question around this. If the number of available members falls below the threshold to activate the next priority group, is traffic still sent to the remaining member/s in the higher group?

I.E 1.Priority Group 200 1/4 members available threshold is min 2 2.Priority Group 100 4/4 members available threshold is min 2

is traffic still sent to the single member in Group 1 as well as all the members in Group 2?

Many thanks

Russell