Why did multiple jobs upload as a single listing?
AutoHDR creates one listing per upload session. If you dropped multiple properties into a single upload, they all end up in one listing — each shoot needs its own separate upload session.
Going forward
Drop one property's files in, click upload, wait for it to start processing, then upload the next one. Each session creates its own listing.
Splitting an already-merged listing
If the combined listing has already processed and you need it split, re-upload each property's files as separate sessions. Re-runs are free — you only pay when you download.