Can't really give a good answer to this. After a few weeks, I emailed both Thrifty and Qantas about the missing points. No response from Thrifty, Qantas took about a week, but asked for a copy of my rental agreement. I scanned them in and emailed them off. About a week later, received a reply email and the points were posted. Took about 5 weeks total for me. I was getting ready to transfer SPG points, since those take a month to transfer and I only had a month before my QF points expire. Now, 3 years left.
If anyone stumbles across this later, please post how long it takes for an automatic posting, and if it goes through at all. Thanks.