Well, it was in the same source file, but the regular expression I was using to find similar queries wasn’t good enough. I needed to tweak bp_blogs/bp_blogs_classes.php:get() to make the content displayed on the Sites page consistent with the total number of sites produced by bp_blogs/bp_blogs_classes.php:get_all() and displayed inside the “All Sites” button on that page. Sorry for wasting people’s time.
