Sir, as posted here after chart preparation, might be possibility of that it was pqwl 7, 8. After charting one is upgraded(which is a random process) and second one ends with wl7.
You can't board the train with waitlist tkts as per rule. Here one psngr is upgraded so he/she can travel in 1A but second one can't as per my opinion because his/her tkt is in waitlist, so its totally depends on TTE to allow him/her in SL class. I think for 1A he/she should pay extra too.