I gave another test today, I clone it from my archives. When I'm going to transfer the it shows zero scans. Again almost 90 students scanned the test. I re-scan the test again, then transfer it. But again the data disappear again. They scanned the test in a chromebook, but I re-scan in a desktop or laptop and they disappear again. I cloned from archives for my other class, and scans & data still working fine. It is only with specific groups.
it happened again