Very good question. You will have home week booking available, as long as you have the required number of points available FOR THAT SPECIFIC YEAR/unit/resort (not saved points or next years points) in your account {I certainly hope that I was clear on the answer. If not then ask again}. I had the same question so I asked Club Reservation Counselor a couple of years ago. They told me the same thing and based also upon my years of booking experience I find this to be true. I also was worried about how this worked because I have ski week home booking at both Valdoro and Park City.
So once you drop below the required number of points in that year for that resort/unit (again not saved or following years points), you will lose home week booking. So just as an example, let say that you own a 2-Bd unit in both LV and Valdoro both 7,000 points each for a total of 14,000 points. Let also say that you use 7000 of you 2019 points to book HHV. You will still have Home Week booking available at both Valdoro and LV. But of course, once you book the first one such as Valdoro, you will lose Home Week booking in LV.